1 /* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi> 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10 #include "includes.h" 11 12 #include "common.h" 13 #include "eloop.h" 14 #include "common/ieee802_11_common.h" 15 #include "common/ieee802_11_defs.h" 16 #include "common/wpa_ctrl.h" 17 #include "wps/wps_i.h" 18 #include "p2p/p2p.h" 19 #include "ap/hostapd.h" 20 #include "ap/ap_config.h" 21 #include "ap/sta_info.h" 22 #include "ap/ap_drv_ops.h" 23 #include "ap/wps_hostapd.h" 24 #include "ap/p2p_hostapd.h" 25 #include "ap/dfs.h" 26 #include "eapol_supp/eapol_supp_sm.h" 27 #include "rsn_supp/wpa.h" 28 #include "wpa_supplicant_i.h" 29 #include "driver_i.h" 30 #include "ap.h" 31 #include "config_ssid.h" 32 #include "config.h" 33 #include "notify.h" 34 #include "scan.h" 35 #include "bss.h" 36 #include "offchannel.h" 37 #include "wps_supplicant.h" 38 #include "p2p_supplicant.h" 39 #include "wifi_display.h" 40 41 42 /* 43 * How many times to try to scan to find the GO before giving up on join 44 * request. 45 */ 46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 47 48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5 49 50 /** 51 * Defines time interval in seconds when a GO needs to evacuate a frequency that 52 * it is currently using, but is no longer valid for P2P use cases. 53 */ 54 #define P2P_GO_FREQ_CHANGE_TIME 5 55 56 /** 57 * Defines CSA parameters which are used when GO evacuates the no longer valid 58 * channel (and if the driver supports channel switch). 59 */ 60 #define P2P_GO_CSA_COUNT 7 61 #define P2P_GO_CSA_BLOCK_TX 0 62 63 #ifndef P2P_MAX_CLIENT_IDLE 64 /* 65 * How many seconds to try to reconnect to the GO when connection in P2P client 66 * role has been lost. 67 */ 68 #define P2P_MAX_CLIENT_IDLE 10 69 #endif /* P2P_MAX_CLIENT_IDLE */ 70 71 #ifndef P2P_MAX_INITIAL_CONN_WAIT 72 /* 73 * How many seconds to wait for initial 4-way handshake to get completed after 74 * WPS provisioning step or after the re-invocation of a persistent group on a 75 * P2P Client. 76 */ 77 #define P2P_MAX_INITIAL_CONN_WAIT 10 78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */ 79 80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 81 /* 82 * How many seconds to wait for initial 4-way handshake to get completed after 83 * WPS provisioning step on the GO. This controls the extra time the P2P 84 * operation is considered to be in progress (e.g., to delay other scans) after 85 * WPS provisioning has been completed on the GO during group formation. 86 */ 87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10 88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 89 90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 91 /* 92 * How many seconds to wait for initial 4-way handshake to get completed after 93 * re-invocation of a persistent group on the GO when the client is expected 94 * to connect automatically (no user interaction). 95 */ 96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 98 99 #define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 100 101 /* 102 * How many seconds to wait to re-attempt to move GOs, in case previous attempt 103 * was not possible. 104 */ 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30 106 107 enum p2p_group_removal_reason { 108 P2P_GROUP_REMOVAL_UNKNOWN, 109 P2P_GROUP_REMOVAL_SILENT, 110 P2P_GROUP_REMOVAL_FORMATION_FAILED, 111 P2P_GROUP_REMOVAL_REQUESTED, 112 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 113 P2P_GROUP_REMOVAL_UNAVAILABLE, 114 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 115 P2P_GROUP_REMOVAL_PSK_FAILURE, 116 P2P_GROUP_REMOVAL_FREQ_CONFLICT, 117 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL 118 }; 119 120 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 122 static struct wpa_supplicant * 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 124 int go); 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 126 const u8 *ssid, size_t ssid_len); 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 128 int *force_freq, int *pref_freq, int go, 129 unsigned int *pref_freq_list, 130 unsigned int *num_pref_freq); 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 132 const u8 *ssid, size_t ssid_len); 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 135 const u8 *dev_addr, enum p2p_wps_method wps_method, 136 int auto_join, int freq, 137 const u8 *ssid, size_t ssid_len); 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 143 void *timeout_ctx); 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 146 int group_added); 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 148 static void wpas_stop_listen(void *ctx); 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx); 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s); 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 152 enum wpa_driver_if_type type); 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 154 int already_deleted); 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 156 struct wpa_used_freq_data *freqs, 157 unsigned int num); 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx); 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq); 160 static void 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 162 struct wpa_used_freq_data *freqs, unsigned int num, 163 enum wpas_p2p_channel_update_trig trig); 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx); 165 166 167 /* 168 * Get the number of concurrent channels that the HW can operate, but that are 169 * currently not in use by any of the wpa_supplicant interfaces. 170 */ 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s) 172 { 173 int *freqs; 174 int num, unused; 175 176 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 177 if (!freqs) 178 return -1; 179 180 num = get_shared_radio_freqs(wpa_s, freqs, 181 wpa_s->num_multichan_concurrent); 182 os_free(freqs); 183 184 unused = wpa_s->num_multichan_concurrent - num; 185 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused); 186 return unused; 187 } 188 189 190 /* 191 * Get the frequencies that are currently in use by one or more of the virtual 192 * interfaces, and that are also valid for P2P operation. 193 */ 194 static unsigned int 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s, 196 struct wpa_used_freq_data *p2p_freqs, 197 unsigned int len) 198 { 199 struct wpa_used_freq_data *freqs; 200 unsigned int num, i, j; 201 202 freqs = os_calloc(wpa_s->num_multichan_concurrent, 203 sizeof(struct wpa_used_freq_data)); 204 if (!freqs) 205 return 0; 206 207 num = get_shared_radio_freqs_data(wpa_s, freqs, 208 wpa_s->num_multichan_concurrent); 209 210 os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len); 211 212 for (i = 0, j = 0; i < num && j < len; i++) { 213 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 214 p2p_freqs[j++] = freqs[i]; 215 } 216 217 os_free(freqs); 218 219 dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j); 220 221 return j; 222 } 223 224 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 226 int freq) 227 { 228 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 229 return; 230 231 /* Use the wpa_s used to control the P2P Device operation */ 232 wpa_s = wpa_s->global->p2p_init_wpa_s; 233 234 if (wpa_s->conf->p2p_ignore_shared_freq && 235 freq > 0 && wpa_s->num_multichan_concurrent > 1 && 236 wpas_p2p_num_unused_channels(wpa_s) > 0) { 237 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration", 238 freq); 239 freq = 0; 240 } 241 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 242 } 243 244 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 246 struct wpa_scan_results *scan_res) 247 { 248 size_t i; 249 250 if (wpa_s->p2p_scan_work) { 251 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 252 wpa_s->p2p_scan_work = NULL; 253 radio_work_done(work); 254 } 255 256 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 257 return; 258 259 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 260 (int) scan_res->num); 261 262 for (i = 0; i < scan_res->num; i++) { 263 struct wpa_scan_res *bss = scan_res->res[i]; 264 struct os_reltime time_tmp_age, entry_ts; 265 const u8 *ies; 266 size_t ies_len; 267 268 time_tmp_age.sec = bss->age / 1000; 269 time_tmp_age.usec = (bss->age % 1000) * 1000; 270 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 271 272 ies = (const u8 *) (bss + 1); 273 ies_len = bss->ie_len; 274 if (bss->beacon_ie_len > 0 && 275 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 276 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 277 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for " 278 MACSTR, MAC2STR(bss->bssid)); 279 ies = ies + ies_len; 280 ies_len = bss->beacon_ie_len; 281 } 282 283 284 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 285 bss->freq, &entry_ts, bss->level, 286 ies, ies_len) > 0) 287 break; 288 } 289 290 p2p_scan_res_handled(wpa_s->global->p2p); 291 } 292 293 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit) 295 { 296 struct wpa_supplicant *wpa_s = work->wpa_s; 297 struct wpa_driver_scan_params *params = work->ctx; 298 int ret; 299 300 if (deinit) { 301 if (!work->started) { 302 wpa_scan_free_params(params); 303 return; 304 } 305 306 wpa_s->p2p_scan_work = NULL; 307 return; 308 } 309 310 if (wpa_s->clear_driver_scan_cache) { 311 wpa_printf(MSG_DEBUG, 312 "Request driver to clear scan cache due to local BSS flush"); 313 params->only_new_results = 1; 314 } 315 ret = wpa_drv_scan(wpa_s, params); 316 if (ret == 0) 317 wpa_s->curr_scan_cookie = params->scan_cookie; 318 wpa_scan_free_params(params); 319 work->ctx = NULL; 320 if (ret) { 321 radio_work_done(work); 322 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 323 return; 324 } 325 326 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret); 327 os_get_reltime(&wpa_s->scan_trigger_time); 328 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 329 wpa_s->own_scan_requested = 1; 330 wpa_s->clear_driver_scan_cache = 0; 331 wpa_s->p2p_scan_work = work; 332 } 333 334 335 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s, 336 int freq) 337 { 338 if (wpa_s->global->p2p_24ghz_social_channels && 339 (freq == 2412 || freq == 2437 || freq == 2462)) { 340 /* 341 * Search all social channels regardless of whether these have 342 * been disabled for P2P operating channel use to avoid missing 343 * peers. 344 */ 345 return 1; 346 } 347 return p2p_supported_freq(wpa_s->global->p2p, freq); 348 } 349 350 351 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 352 unsigned int num_req_dev_types, 353 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 354 { 355 struct wpa_supplicant *wpa_s = ctx; 356 struct wpa_driver_scan_params *params = NULL; 357 struct wpabuf *wps_ie, *ies; 358 unsigned int num_channels = 0; 359 int social_channels_freq[] = { 2412, 2437, 2462, 60480 }; 360 size_t ielen; 361 u8 *n, i; 362 unsigned int bands; 363 364 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 365 return -1; 366 367 if (wpa_s->p2p_scan_work) { 368 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending"); 369 return -1; 370 } 371 372 params = os_zalloc(sizeof(*params)); 373 if (params == NULL) 374 return -1; 375 376 /* P2P Wildcard SSID */ 377 params->num_ssids = 1; 378 n = os_malloc(P2P_WILDCARD_SSID_LEN); 379 if (n == NULL) 380 goto fail; 381 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 382 params->ssids[0].ssid = n; 383 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 384 385 wpa_s->wps->dev.p2p = 1; 386 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 387 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 388 num_req_dev_types, req_dev_types); 389 if (wps_ie == NULL) 390 goto fail; 391 392 switch (type) { 393 case P2P_SCAN_SOCIAL: 394 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1, 395 sizeof(int)); 396 if (params->freqs == NULL) 397 goto fail; 398 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 399 if (wpas_p2p_search_social_channel( 400 wpa_s, social_channels_freq[i])) 401 params->freqs[num_channels++] = 402 social_channels_freq[i]; 403 } 404 params->freqs[num_channels++] = 0; 405 break; 406 case P2P_SCAN_FULL: 407 break; 408 case P2P_SCAN_SPECIFIC: 409 params->freqs = os_calloc(2, sizeof(int)); 410 if (params->freqs == NULL) 411 goto fail; 412 params->freqs[0] = freq; 413 params->freqs[1] = 0; 414 break; 415 case P2P_SCAN_SOCIAL_PLUS_ONE: 416 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2, 417 sizeof(int)); 418 if (params->freqs == NULL) 419 goto fail; 420 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) { 421 if (wpas_p2p_search_social_channel( 422 wpa_s, social_channels_freq[i])) 423 params->freqs[num_channels++] = 424 social_channels_freq[i]; 425 } 426 if (p2p_supported_freq(wpa_s->global->p2p, freq)) 427 params->freqs[num_channels++] = freq; 428 params->freqs[num_channels++] = 0; 429 break; 430 } 431 432 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 433 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 434 if (ies == NULL) { 435 wpabuf_free(wps_ie); 436 goto fail; 437 } 438 wpabuf_put_buf(ies, wps_ie); 439 wpabuf_free(wps_ie); 440 441 bands = wpas_get_bands(wpa_s, params->freqs); 442 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands); 443 444 params->p2p_probe = 1; 445 n = os_malloc(wpabuf_len(ies)); 446 if (n == NULL) { 447 wpabuf_free(ies); 448 goto fail; 449 } 450 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies)); 451 params->extra_ies = n; 452 params->extra_ies_len = wpabuf_len(ies); 453 wpabuf_free(ies); 454 455 radio_remove_works(wpa_s, "p2p-scan", 0); 456 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb, 457 params) < 0) 458 goto fail; 459 return 0; 460 461 fail: 462 wpa_scan_free_params(params); 463 return -1; 464 } 465 466 467 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 468 { 469 switch (p2p_group_interface) { 470 case P2P_GROUP_INTERFACE_PENDING: 471 return WPA_IF_P2P_GROUP; 472 case P2P_GROUP_INTERFACE_GO: 473 return WPA_IF_P2P_GO; 474 case P2P_GROUP_INTERFACE_CLIENT: 475 return WPA_IF_P2P_CLIENT; 476 } 477 478 return WPA_IF_P2P_GROUP; 479 } 480 481 482 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 483 const u8 *ssid, 484 size_t ssid_len, int *go) 485 { 486 struct wpa_ssid *s; 487 488 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 489 for (s = wpa_s->conf->ssid; s; s = s->next) { 490 if (s->disabled != 0 || !s->p2p_group || 491 s->ssid_len != ssid_len || 492 os_memcmp(ssid, s->ssid, ssid_len) != 0) 493 continue; 494 if (s->mode == WPAS_MODE_P2P_GO && 495 s != wpa_s->current_ssid) 496 continue; 497 if (go) 498 *go = s->mode == WPAS_MODE_P2P_GO; 499 return wpa_s; 500 } 501 } 502 503 return NULL; 504 } 505 506 507 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx) 508 { 509 struct wpa_supplicant *wpa_s = eloop_ctx; 510 wpa_printf(MSG_DEBUG, 511 "P2P: Complete previously requested removal of %s", 512 wpa_s->ifname); 513 wpas_p2p_disconnect(wpa_s); 514 } 515 516 517 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s, 518 struct wpa_supplicant *calling_wpa_s) 519 { 520 if (calling_wpa_s == wpa_s && wpa_s && 521 wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 522 /* 523 * The calling wpa_s instance is going to be removed. Do that 524 * from an eloop callback to keep the instance available until 525 * the caller has returned. This my be needed, e.g., to provide 526 * control interface responses on the per-interface socket. 527 */ 528 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect, 529 wpa_s, NULL) < 0) 530 return -1; 531 return 0; 532 } 533 534 return wpas_p2p_disconnect(wpa_s); 535 } 536 537 538 /* Determine total number of clients in active groups where we are the GO */ 539 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s) 540 { 541 unsigned int count = 0; 542 struct wpa_ssid *s; 543 544 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 545 for (s = wpa_s->conf->ssid; s; s = s->next) { 546 wpa_printf(MSG_DEBUG, 547 "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d", 548 wpa_s, s, s->disabled, s->p2p_group, 549 s->mode); 550 if (!s->disabled && s->p2p_group && 551 s->mode == WPAS_MODE_P2P_GO) { 552 count += p2p_get_group_num_members( 553 wpa_s->p2p_group); 554 } 555 } 556 } 557 558 return count; 559 } 560 561 562 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s) 563 { 564 return !wpa_s->p2p_mgmt && wpa_s->current_ssid && 565 !wpa_s->current_ssid->disabled && 566 wpa_s->current_ssid->p2p_group && 567 wpa_s->current_ssid->p2p_persistent_group; 568 } 569 570 571 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s) 572 { 573 return p2p_is_active_persistent_group(wpa_s) && 574 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO; 575 } 576 577 578 /* Find an interface for a P2P group where we are the GO */ 579 static struct wpa_supplicant * 580 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s) 581 { 582 struct wpa_supplicant *save = NULL; 583 584 if (!wpa_s) 585 return NULL; 586 587 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 588 if (!p2p_is_active_persistent_go(wpa_s)) 589 continue; 590 591 /* Prefer a group with connected clients */ 592 if (p2p_get_group_num_members(wpa_s->p2p_group)) 593 return wpa_s; 594 save = wpa_s; 595 } 596 597 /* No group with connected clients, so pick the one without (if any) */ 598 return save; 599 } 600 601 602 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s) 603 { 604 return p2p_is_active_persistent_group(wpa_s) && 605 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 606 } 607 608 609 /* Find an interface for a P2P group where we are the P2P Client */ 610 static struct wpa_supplicant * 611 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s) 612 { 613 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 614 if (p2p_is_active_persistent_cli(wpa_s)) 615 return wpa_s; 616 } 617 618 return NULL; 619 } 620 621 622 /* Find a persistent group where we are the GO */ 623 static struct wpa_ssid * 624 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s) 625 { 626 struct wpa_ssid *s; 627 628 for (s = wpa_s->conf->ssid; s; s = s->next) { 629 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO) 630 return s; 631 } 632 633 return NULL; 634 } 635 636 637 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role, 638 unsigned int *force_freq, 639 unsigned int *pref_freq) 640 { 641 struct wpa_supplicant *wpa_s = ctx; 642 struct wpa_ssid *s; 643 u8 conncap = P2PS_SETUP_NONE; 644 unsigned int owned_members = 0; 645 struct wpa_supplicant *go_wpa_s, *cli_wpa_s; 646 struct wpa_ssid *persistent_go; 647 int p2p_no_group_iface; 648 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 649 650 wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role); 651 652 if (force_freq) 653 *force_freq = 0; 654 if (pref_freq) 655 *pref_freq = 0; 656 657 size = P2P_MAX_PREF_CHANNELS; 658 if (force_freq && pref_freq && 659 !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq, 660 (int *) pref_freq, 0, pref_freq_list, &size)) 661 wpas_p2p_set_own_freq_preference(wpa_s, 662 *force_freq ? *force_freq : 663 *pref_freq); 664 665 /* 666 * For non-concurrent capable devices: 667 * If persistent_go, then no new. 668 * If GO, then no client. 669 * If client, then no GO. 670 */ 671 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 672 if (go_wpa_s) 673 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group); 674 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 675 p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s); 676 cli_wpa_s = wpas_p2p_get_cli_group(wpa_s); 677 678 wpa_printf(MSG_DEBUG, 679 "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p", 680 go_wpa_s, owned_members, cli_wpa_s, persistent_go); 681 682 /* If not concurrent, restrict our choices */ 683 if (p2p_no_group_iface) { 684 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface"); 685 686 if (cli_wpa_s) 687 return P2PS_SETUP_NONE; 688 689 if (go_wpa_s) { 690 if (role == P2PS_SETUP_CLIENT || 691 incoming == P2PS_SETUP_GROUP_OWNER || 692 p2p_client_limit_reached(go_wpa_s->p2p_group)) 693 return P2PS_SETUP_NONE; 694 695 return P2PS_SETUP_GROUP_OWNER; 696 } 697 698 if (persistent_go) { 699 if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) { 700 if (!incoming) 701 return P2PS_SETUP_GROUP_OWNER | 702 P2PS_SETUP_CLIENT; 703 if (incoming == P2PS_SETUP_NEW) { 704 u8 r; 705 706 if (os_get_random(&r, sizeof(r)) < 0 || 707 (r & 1)) 708 return P2PS_SETUP_CLIENT; 709 return P2PS_SETUP_GROUP_OWNER; 710 } 711 } 712 } 713 } 714 715 /* If a required role has been specified, handle it here */ 716 if (role && role != P2PS_SETUP_NEW) { 717 switch (incoming) { 718 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 719 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 720 /* 721 * Peer has an active GO, so if the role allows it and 722 * we do not have any active roles, become client. 723 */ 724 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && 725 !cli_wpa_s) 726 return P2PS_SETUP_CLIENT; 727 728 /* fall through */ 729 730 case P2PS_SETUP_NONE: 731 case P2PS_SETUP_NEW: 732 conncap = role; 733 goto grp_owner; 734 735 case P2PS_SETUP_GROUP_OWNER: 736 /* 737 * Must be a complimentary role - cannot be a client to 738 * more than one peer. 739 */ 740 if (incoming == role || cli_wpa_s) 741 return P2PS_SETUP_NONE; 742 743 return P2PS_SETUP_CLIENT; 744 745 case P2PS_SETUP_CLIENT: 746 /* Must be a complimentary role */ 747 if (incoming != role) { 748 conncap = P2PS_SETUP_GROUP_OWNER; 749 goto grp_owner; 750 } 751 /* fall through */ 752 753 default: 754 return P2PS_SETUP_NONE; 755 } 756 } 757 758 /* 759 * For now, we only will support ownership of one group, and being a 760 * client of one group. Therefore, if we have either an existing GO 761 * group, or an existing client group, we will not do a new GO 762 * negotiation, but rather try to re-use the existing groups. 763 */ 764 switch (incoming) { 765 case P2PS_SETUP_NONE: 766 case P2PS_SETUP_NEW: 767 if (cli_wpa_s) 768 conncap = P2PS_SETUP_GROUP_OWNER; 769 else if (!owned_members) 770 conncap = P2PS_SETUP_NEW; 771 else if (incoming == P2PS_SETUP_NONE) 772 conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT; 773 else 774 conncap = P2PS_SETUP_CLIENT; 775 break; 776 777 case P2PS_SETUP_CLIENT: 778 conncap = P2PS_SETUP_GROUP_OWNER; 779 break; 780 781 case P2PS_SETUP_GROUP_OWNER: 782 if (!cli_wpa_s) 783 conncap = P2PS_SETUP_CLIENT; 784 break; 785 786 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW: 787 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT: 788 if (cli_wpa_s) 789 conncap = P2PS_SETUP_GROUP_OWNER; 790 else { 791 u8 r; 792 793 if (os_get_random(&r, sizeof(r)) < 0 || 794 (r & 1)) 795 conncap = P2PS_SETUP_CLIENT; 796 else 797 conncap = P2PS_SETUP_GROUP_OWNER; 798 } 799 break; 800 801 default: 802 return P2PS_SETUP_NONE; 803 } 804 805 grp_owner: 806 if ((conncap & P2PS_SETUP_GROUP_OWNER) || 807 (!incoming && (conncap & P2PS_SETUP_NEW))) { 808 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group)) 809 conncap &= ~P2PS_SETUP_GROUP_OWNER; 810 811 s = wpas_p2p_get_persistent_go(wpa_s); 812 if (!s && !go_wpa_s && p2p_no_group_iface) { 813 p2p_set_intended_addr(wpa_s->global->p2p, 814 wpa_s->p2p_mgmt ? 815 wpa_s->parent->own_addr : 816 wpa_s->own_addr); 817 } else if (!s && !go_wpa_s) { 818 if (wpas_p2p_add_group_interface(wpa_s, 819 WPA_IF_P2P_GROUP) < 0) { 820 wpa_printf(MSG_ERROR, 821 "P2P: Failed to allocate a new interface for the group"); 822 return P2PS_SETUP_NONE; 823 } 824 wpa_s->global->pending_group_iface_for_p2ps = 1; 825 p2p_set_intended_addr(wpa_s->global->p2p, 826 wpa_s->pending_interface_addr); 827 } 828 } 829 830 return conncap; 831 } 832 833 834 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 835 enum p2p_group_removal_reason removal_reason) 836 { 837 struct wpa_ssid *ssid; 838 char *gtype; 839 const char *reason; 840 841 ssid = wpa_s->current_ssid; 842 if (ssid == NULL) { 843 /* 844 * The current SSID was not known, but there may still be a 845 * pending P2P group interface waiting for provisioning or a 846 * P2P group that is trying to reconnect. 847 */ 848 ssid = wpa_s->conf->ssid; 849 while (ssid) { 850 if (ssid->p2p_group && ssid->disabled != 2) 851 break; 852 ssid = ssid->next; 853 } 854 if (ssid == NULL && 855 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 856 { 857 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 858 "not found"); 859 return -1; 860 } 861 } 862 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 863 gtype = "GO"; 864 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 865 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 866 wpa_s->reassociate = 0; 867 wpa_s->disconnected = 1; 868 gtype = "client"; 869 } else 870 gtype = "GO"; 871 872 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 873 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 874 875 if (os_strcmp(gtype, "client") == 0) { 876 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 877 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal, 878 wpa_s, NULL)) { 879 wpa_printf(MSG_DEBUG, 880 "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal"); 881 removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE; 882 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, 883 wpa_s, NULL); 884 } 885 } 886 887 if (wpa_s->cross_connect_in_use) { 888 wpa_s->cross_connect_in_use = 0; 889 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 890 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 891 wpa_s->ifname, wpa_s->cross_connect_uplink); 892 } 893 switch (removal_reason) { 894 case P2P_GROUP_REMOVAL_REQUESTED: 895 reason = " reason=REQUESTED"; 896 break; 897 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 898 reason = " reason=FORMATION_FAILED"; 899 break; 900 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 901 reason = " reason=IDLE"; 902 break; 903 case P2P_GROUP_REMOVAL_UNAVAILABLE: 904 reason = " reason=UNAVAILABLE"; 905 break; 906 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 907 reason = " reason=GO_ENDING_SESSION"; 908 break; 909 case P2P_GROUP_REMOVAL_PSK_FAILURE: 910 reason = " reason=PSK_FAILURE"; 911 break; 912 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 913 reason = " reason=FREQ_CONFLICT"; 914 break; 915 default: 916 reason = ""; 917 break; 918 } 919 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 920 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 921 P2P_EVENT_GROUP_REMOVED "%s %s%s", 922 wpa_s->ifname, gtype, reason); 923 } 924 925 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0) 926 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout"); 927 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 928 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 929 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 930 wpa_s->p2pdev, NULL) > 0) { 931 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 932 "timeout"); 933 wpa_s->p2p_in_provisioning = 0; 934 wpas_p2p_group_formation_failed(wpa_s, 1); 935 } 936 937 wpa_s->p2p_in_invitation = 0; 938 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 939 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL); 940 941 /* 942 * Make sure wait for the first client does not remain active after the 943 * group has been removed. 944 */ 945 wpa_s->global->p2p_go_wait_client.sec = 0; 946 947 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 948 struct wpa_global *global; 949 char *ifname; 950 enum wpa_driver_if_type type; 951 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 952 wpa_s->ifname); 953 global = wpa_s->global; 954 ifname = os_strdup(wpa_s->ifname); 955 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 956 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL); 957 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 958 wpa_s = global->ifaces; 959 if (wpa_s && ifname) 960 wpa_drv_if_remove(wpa_s, type, ifname); 961 os_free(ifname); 962 return 1; 963 } 964 965 /* 966 * The primary interface was used for P2P group operations, so 967 * need to reset its p2pdev. 968 */ 969 wpa_s->p2pdev = wpa_s->parent; 970 971 if (!wpa_s->p2p_go_group_formation_completed) { 972 wpa_s->global->p2p_group_formation = NULL; 973 wpa_s->p2p_in_provisioning = 0; 974 } 975 976 wpa_s->show_group_started = 0; 977 os_free(wpa_s->go_params); 978 wpa_s->go_params = NULL; 979 980 os_free(wpa_s->p2p_group_common_freqs); 981 wpa_s->p2p_group_common_freqs = NULL; 982 wpa_s->p2p_group_common_freqs_num = 0; 983 984 wpa_s->waiting_presence_resp = 0; 985 986 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 987 if (ssid && (ssid->p2p_group || 988 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 989 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 990 int id = ssid->id; 991 if (ssid == wpa_s->current_ssid) { 992 wpa_sm_set_config(wpa_s->wpa, NULL); 993 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 994 wpa_s->current_ssid = NULL; 995 } 996 /* 997 * Networks objects created during any P2P activities are not 998 * exposed out as they might/will confuse certain non-P2P aware 999 * applications since these network objects won't behave like 1000 * regular ones. 1001 * 1002 * Likewise, we don't send out network removed signals for such 1003 * network objects. 1004 */ 1005 wpa_config_remove_network(wpa_s->conf, id); 1006 wpa_supplicant_clear_status(wpa_s); 1007 wpa_supplicant_cancel_sched_scan(wpa_s); 1008 } else { 1009 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 1010 "found"); 1011 } 1012 if (wpa_s->ap_iface) 1013 wpa_supplicant_ap_deinit(wpa_s); 1014 else 1015 wpa_drv_deinit_p2p_cli(wpa_s); 1016 1017 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1018 1019 return 0; 1020 } 1021 1022 1023 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 1024 u8 *go_dev_addr, 1025 const u8 *ssid, size_t ssid_len) 1026 { 1027 struct wpa_bss *bss; 1028 const u8 *bssid; 1029 struct wpabuf *p2p; 1030 u8 group_capab; 1031 const u8 *addr; 1032 1033 if (wpa_s->go_params) 1034 bssid = wpa_s->go_params->peer_interface_addr; 1035 else 1036 bssid = wpa_s->bssid; 1037 1038 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 1039 if (bss == NULL && wpa_s->go_params && 1040 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr)) 1041 bss = wpa_bss_get_p2p_dev_addr( 1042 wpa_s, wpa_s->go_params->peer_device_addr); 1043 if (bss == NULL) { 1044 u8 iface_addr[ETH_ALEN]; 1045 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 1046 iface_addr) == 0) 1047 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 1048 } 1049 if (bss == NULL) { 1050 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1051 "group is persistent - BSS " MACSTR " not found", 1052 MAC2STR(bssid)); 1053 return 0; 1054 } 1055 1056 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1057 if (p2p == NULL) 1058 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss, 1059 P2P_IE_VENDOR_TYPE); 1060 if (p2p == NULL) { 1061 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 1062 "group is persistent - BSS " MACSTR 1063 " did not include P2P IE", MAC2STR(bssid)); 1064 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 1065 (u8 *) (bss + 1), bss->ie_len); 1066 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 1067 ((u8 *) bss + 1) + bss->ie_len, 1068 bss->beacon_ie_len); 1069 return 0; 1070 } 1071 1072 group_capab = p2p_get_group_capab(p2p); 1073 addr = p2p_get_go_dev_addr(p2p); 1074 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 1075 "group_capab=0x%x", group_capab); 1076 if (addr) { 1077 os_memcpy(go_dev_addr, addr, ETH_ALEN); 1078 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 1079 MAC2STR(addr)); 1080 } else 1081 os_memset(go_dev_addr, 0, ETH_ALEN); 1082 wpabuf_free(p2p); 1083 1084 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 1085 "go_dev_addr=" MACSTR, 1086 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 1087 1088 return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP); 1089 } 1090 1091 1092 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 1093 struct wpa_ssid *ssid, 1094 const u8 *go_dev_addr) 1095 { 1096 struct wpa_ssid *s; 1097 int changed = 0; 1098 1099 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 1100 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 1101 for (s = wpa_s->conf->ssid; s; s = s->next) { 1102 if (s->disabled == 2 && 1103 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 1104 s->ssid_len == ssid->ssid_len && 1105 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 1106 break; 1107 } 1108 1109 if (s) { 1110 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 1111 "entry"); 1112 if (ssid->passphrase && !s->passphrase) 1113 changed = 1; 1114 else if (ssid->passphrase && s->passphrase && 1115 os_strcmp(ssid->passphrase, s->passphrase) != 0) 1116 changed = 1; 1117 } else { 1118 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 1119 "entry"); 1120 changed = 1; 1121 s = wpa_config_add_network(wpa_s->conf); 1122 if (s == NULL) 1123 return -1; 1124 1125 /* 1126 * Instead of network_added we emit persistent_group_added 1127 * notification. Also to keep the defense checks in 1128 * persistent_group obj registration method, we set the 1129 * relevant flags in s to designate it as a persistent group. 1130 */ 1131 s->p2p_group = 1; 1132 s->p2p_persistent_group = 1; 1133 wpas_notify_persistent_group_added(wpa_s, s); 1134 wpa_config_set_network_defaults(s); 1135 } 1136 1137 s->p2p_group = 1; 1138 s->p2p_persistent_group = 1; 1139 s->disabled = 2; 1140 s->bssid_set = 1; 1141 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 1142 s->mode = ssid->mode; 1143 s->auth_alg = WPA_AUTH_ALG_OPEN; 1144 s->key_mgmt = WPA_KEY_MGMT_PSK; 1145 s->proto = WPA_PROTO_RSN; 1146 s->pbss = ssid->pbss; 1147 s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 1148 s->export_keys = 1; 1149 if (ssid->passphrase) { 1150 os_free(s->passphrase); 1151 s->passphrase = os_strdup(ssid->passphrase); 1152 } 1153 if (ssid->psk_set) { 1154 s->psk_set = 1; 1155 os_memcpy(s->psk, ssid->psk, 32); 1156 } 1157 if (s->passphrase && !s->psk_set) 1158 wpa_config_update_psk(s); 1159 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 1160 os_free(s->ssid); 1161 s->ssid = os_malloc(ssid->ssid_len); 1162 } 1163 if (s->ssid) { 1164 s->ssid_len = ssid->ssid_len; 1165 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 1166 } 1167 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) { 1168 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list); 1169 wpa_s->global->add_psk = NULL; 1170 changed = 1; 1171 } 1172 1173 if (changed && wpa_s->conf->update_config && 1174 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 1175 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1176 } 1177 1178 return s->id; 1179 } 1180 1181 1182 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 1183 const u8 *addr) 1184 { 1185 struct wpa_ssid *ssid, *s; 1186 u8 *n; 1187 size_t i; 1188 int found = 0; 1189 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 1190 1191 ssid = wpa_s->current_ssid; 1192 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 1193 !ssid->p2p_persistent_group) 1194 return; 1195 1196 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 1197 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 1198 continue; 1199 1200 if (s->ssid_len == ssid->ssid_len && 1201 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 1202 break; 1203 } 1204 1205 if (s == NULL) 1206 return; 1207 1208 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 1209 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr, 1210 ETH_ALEN) != 0) 1211 continue; 1212 1213 if (i == s->num_p2p_clients - 1) 1214 return; /* already the most recent entry */ 1215 1216 /* move the entry to mark it most recent */ 1217 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 1218 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 1219 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 1220 os_memcpy(s->p2p_client_list + 1221 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr, 1222 ETH_ALEN); 1223 os_memset(s->p2p_client_list + 1224 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1225 0xff, ETH_ALEN); 1226 found = 1; 1227 break; 1228 } 1229 1230 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 1231 n = os_realloc_array(s->p2p_client_list, 1232 s->num_p2p_clients + 1, 2 * ETH_ALEN); 1233 if (n == NULL) 1234 return; 1235 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr, 1236 ETH_ALEN); 1237 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN, 1238 0xff, ETH_ALEN); 1239 s->p2p_client_list = n; 1240 s->num_p2p_clients++; 1241 } else if (!found && s->p2p_client_list) { 1242 /* Not enough room for an additional entry - drop the oldest 1243 * entry */ 1244 os_memmove(s->p2p_client_list, 1245 s->p2p_client_list + 2 * ETH_ALEN, 1246 (s->num_p2p_clients - 1) * 2 * ETH_ALEN); 1247 os_memcpy(s->p2p_client_list + 1248 (s->num_p2p_clients - 1) * 2 * ETH_ALEN, 1249 addr, ETH_ALEN); 1250 os_memset(s->p2p_client_list + 1251 (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN, 1252 0xff, ETH_ALEN); 1253 } 1254 1255 if (p2p_wpa_s->conf->update_config && 1256 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 1257 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1258 } 1259 1260 1261 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s, 1262 int go, struct wpa_ssid *ssid, int freq, 1263 const u8 *psk, const char *passphrase, 1264 const u8 *go_dev_addr, int persistent, 1265 const char *extra) 1266 { 1267 const char *ssid_txt; 1268 char psk_txt[65]; 1269 1270 if (psk) 1271 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32); 1272 else 1273 psk_txt[0] = '\0'; 1274 1275 if (ssid) 1276 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 1277 else 1278 ssid_txt = ""; 1279 1280 if (passphrase && passphrase[0] == '\0') 1281 passphrase = NULL; 1282 1283 /* 1284 * Include PSK/passphrase only in the control interface message and 1285 * leave it out from the debug log entry. 1286 */ 1287 wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO, 1288 P2P_EVENT_GROUP_STARTED 1289 "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr=" 1290 MACSTR "%s%s", 1291 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1292 psk ? " psk=" : "", psk_txt, 1293 passphrase ? " passphrase=\"" : "", 1294 passphrase ? passphrase : "", 1295 passphrase ? "\"" : "", 1296 MAC2STR(go_dev_addr), 1297 persistent ? " [PERSISTENT]" : "", extra); 1298 wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED 1299 "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s", 1300 wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq, 1301 MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "", 1302 extra); 1303 } 1304 1305 1306 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 1307 int success, int already_deleted) 1308 { 1309 struct wpa_ssid *ssid; 1310 int client; 1311 int persistent; 1312 u8 go_dev_addr[ETH_ALEN]; 1313 1314 /* 1315 * This callback is likely called for the main interface. Update wpa_s 1316 * to use the group interface if a new interface was created for the 1317 * group. 1318 */ 1319 if (wpa_s->global->p2p_group_formation) 1320 wpa_s = wpa_s->global->p2p_group_formation; 1321 if (wpa_s->p2p_go_group_formation_completed) { 1322 wpa_s->global->p2p_group_formation = NULL; 1323 wpa_s->p2p_in_provisioning = 0; 1324 } else if (wpa_s->p2p_in_provisioning && !success) { 1325 wpa_msg(wpa_s, MSG_DEBUG, 1326 "P2P: Stop provisioning state due to failure"); 1327 wpa_s->p2p_in_provisioning = 0; 1328 } 1329 wpa_s->p2p_in_invitation = 0; 1330 wpa_s->group_formation_reported = 1; 1331 1332 if (!success) { 1333 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1334 P2P_EVENT_GROUP_FORMATION_FAILURE); 1335 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 1336 if (already_deleted) 1337 return; 1338 wpas_p2p_group_delete(wpa_s, 1339 P2P_GROUP_REMOVAL_FORMATION_FAILED); 1340 return; 1341 } 1342 1343 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1344 P2P_EVENT_GROUP_FORMATION_SUCCESS); 1345 1346 ssid = wpa_s->current_ssid; 1347 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1348 ssid->mode = WPAS_MODE_P2P_GO; 1349 p2p_group_notif_formation_done(wpa_s->p2p_group); 1350 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 1351 } 1352 1353 persistent = 0; 1354 if (ssid) { 1355 client = ssid->mode == WPAS_MODE_INFRA; 1356 if (ssid->mode == WPAS_MODE_P2P_GO) { 1357 persistent = ssid->p2p_persistent_group; 1358 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 1359 ETH_ALEN); 1360 } else 1361 persistent = wpas_p2p_persistent_group(wpa_s, 1362 go_dev_addr, 1363 ssid->ssid, 1364 ssid->ssid_len); 1365 } else { 1366 client = wpa_s->p2p_group_interface == 1367 P2P_GROUP_INTERFACE_CLIENT; 1368 os_memset(go_dev_addr, 0, ETH_ALEN); 1369 } 1370 1371 wpa_s->show_group_started = 0; 1372 if (client) { 1373 /* 1374 * Indicate event only after successfully completed 4-way 1375 * handshake, i.e., when the interface is ready for data 1376 * packets. 1377 */ 1378 wpa_s->show_group_started = 1; 1379 } else { 1380 wpas_p2p_group_started(wpa_s, 1, ssid, 1381 ssid ? ssid->frequency : 0, 1382 ssid && ssid->passphrase == NULL && 1383 ssid->psk_set ? ssid->psk : NULL, 1384 ssid ? ssid->passphrase : NULL, 1385 go_dev_addr, persistent, ""); 1386 wpas_p2p_cross_connect_setup(wpa_s); 1387 wpas_p2p_set_group_idle_timeout(wpa_s); 1388 } 1389 1390 if (persistent) 1391 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 1392 ssid, go_dev_addr); 1393 else { 1394 os_free(wpa_s->global->add_psk); 1395 wpa_s->global->add_psk = NULL; 1396 } 1397 1398 if (!client) { 1399 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL); 1400 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1401 } 1402 } 1403 1404 1405 struct send_action_work { 1406 unsigned int freq; 1407 u8 dst[ETH_ALEN]; 1408 u8 src[ETH_ALEN]; 1409 u8 bssid[ETH_ALEN]; 1410 size_t len; 1411 unsigned int wait_time; 1412 u8 buf[0]; 1413 }; 1414 1415 1416 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s) 1417 { 1418 struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx; 1419 1420 wpa_printf(MSG_DEBUG, 1421 "P2P: Free Action frame radio work @%p (freq=%u dst=" 1422 MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)", 1423 wpa_s->p2p_send_action_work, awork->freq, 1424 MAC2STR(awork->dst), MAC2STR(awork->src), 1425 MAC2STR(awork->bssid), awork->wait_time); 1426 wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame", 1427 awork->buf, awork->len); 1428 os_free(awork); 1429 wpa_s->p2p_send_action_work->ctx = NULL; 1430 radio_work_done(wpa_s->p2p_send_action_work); 1431 wpa_s->p2p_send_action_work = NULL; 1432 } 1433 1434 1435 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 1436 void *timeout_ctx) 1437 { 1438 struct wpa_supplicant *wpa_s = eloop_ctx; 1439 1440 if (!wpa_s->p2p_send_action_work) 1441 return; 1442 1443 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 1444 wpas_p2p_free_send_action_work(wpa_s); 1445 } 1446 1447 1448 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s) 1449 { 1450 if (wpa_s->p2p_send_action_work) { 1451 struct send_action_work *awork; 1452 1453 awork = wpa_s->p2p_send_action_work->ctx; 1454 wpa_printf(MSG_DEBUG, 1455 "P2P: Clear Action TX work @%p (wait_time=%u)", 1456 wpa_s->p2p_send_action_work, awork->wait_time); 1457 if (awork->wait_time == 0) { 1458 wpas_p2p_free_send_action_work(wpa_s); 1459 } else { 1460 /* 1461 * In theory, this should not be needed, but number of 1462 * places in the P2P code is still using non-zero wait 1463 * time for the last Action frame in the sequence and 1464 * some of these do not call send_action_done(). 1465 */ 1466 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1467 wpa_s, NULL); 1468 eloop_register_timeout( 1469 0, awork->wait_time * 1000, 1470 wpas_p2p_send_action_work_timeout, 1471 wpa_s, NULL); 1472 } 1473 } 1474 } 1475 1476 1477 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 1478 unsigned int freq, 1479 const u8 *dst, const u8 *src, 1480 const u8 *bssid, 1481 const u8 *data, size_t data_len, 1482 enum offchannel_send_action_result 1483 result) 1484 { 1485 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 1486 1487 wpas_p2p_action_tx_clear(wpa_s); 1488 1489 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 1490 return; 1491 1492 switch (result) { 1493 case OFFCHANNEL_SEND_ACTION_SUCCESS: 1494 res = P2P_SEND_ACTION_SUCCESS; 1495 break; 1496 case OFFCHANNEL_SEND_ACTION_NO_ACK: 1497 res = P2P_SEND_ACTION_NO_ACK; 1498 break; 1499 case OFFCHANNEL_SEND_ACTION_FAILED: 1500 res = P2P_SEND_ACTION_FAILED; 1501 break; 1502 } 1503 1504 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 1505 1506 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 1507 wpa_s->pending_pd_before_join && 1508 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1509 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 1510 wpa_s->p2p_fallback_to_go_neg) { 1511 wpa_s->pending_pd_before_join = 0; 1512 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 1513 "during p2p_connect-auto"); 1514 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 1515 P2P_EVENT_FALLBACK_TO_GO_NEG 1516 "reason=no-ACK-to-PD-Req"); 1517 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1518 return; 1519 } 1520 } 1521 1522 1523 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1524 { 1525 struct wpa_supplicant *wpa_s = work->wpa_s; 1526 struct send_action_work *awork = work->ctx; 1527 1528 if (deinit) { 1529 if (work->started) { 1530 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1531 wpa_s, NULL); 1532 wpa_s->p2p_send_action_work = NULL; 1533 offchannel_send_action_done(wpa_s); 1534 } 1535 os_free(awork); 1536 return; 1537 } 1538 1539 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1540 awork->bssid, awork->buf, awork->len, 1541 awork->wait_time, 1542 wpas_p2p_send_action_tx_status, 1) < 0) { 1543 os_free(awork); 1544 radio_work_done(work); 1545 return; 1546 } 1547 wpa_s->p2p_send_action_work = work; 1548 } 1549 1550 1551 static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1552 unsigned int freq, const u8 *dst, 1553 const u8 *src, const u8 *bssid, const u8 *buf, 1554 size_t len, unsigned int wait_time) 1555 { 1556 struct send_action_work *awork; 1557 1558 if (wpa_s->p2p_send_action_work) { 1559 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1560 return -1; 1561 } 1562 1563 awork = os_zalloc(sizeof(*awork) + len); 1564 if (awork == NULL) 1565 return -1; 1566 1567 awork->freq = freq; 1568 os_memcpy(awork->dst, dst, ETH_ALEN); 1569 os_memcpy(awork->src, src, ETH_ALEN); 1570 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1571 awork->len = len; 1572 awork->wait_time = wait_time; 1573 os_memcpy(awork->buf, buf, len); 1574 1575 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1576 wpas_send_action_cb, awork) < 0) { 1577 os_free(awork); 1578 return -1; 1579 } 1580 1581 return 0; 1582 } 1583 1584 1585 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1586 const u8 *src, const u8 *bssid, const u8 *buf, 1587 size_t len, unsigned int wait_time) 1588 { 1589 struct wpa_supplicant *wpa_s = ctx; 1590 int listen_freq = -1, send_freq = -1; 1591 1592 if (wpa_s->p2p_listen_work) 1593 listen_freq = wpa_s->p2p_listen_work->freq; 1594 if (wpa_s->p2p_send_action_work) 1595 send_freq = wpa_s->p2p_send_action_work->freq; 1596 if (listen_freq != (int) freq && send_freq != (int) freq) { 1597 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)", 1598 listen_freq, send_freq); 1599 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1600 len, wait_time); 1601 } 1602 1603 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1604 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1605 wait_time, 1606 wpas_p2p_send_action_tx_status, 1); 1607 } 1608 1609 1610 static void wpas_send_action_done(void *ctx) 1611 { 1612 struct wpa_supplicant *wpa_s = ctx; 1613 1614 if (wpa_s->p2p_send_action_work) { 1615 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1616 wpa_s, NULL); 1617 os_free(wpa_s->p2p_send_action_work->ctx); 1618 radio_work_done(wpa_s->p2p_send_action_work); 1619 wpa_s->p2p_send_action_work = NULL; 1620 } 1621 1622 offchannel_send_action_done(wpa_s); 1623 } 1624 1625 1626 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1627 struct p2p_go_neg_results *params) 1628 { 1629 if (wpa_s->go_params == NULL) { 1630 wpa_s->go_params = os_malloc(sizeof(*params)); 1631 if (wpa_s->go_params == NULL) 1632 return -1; 1633 } 1634 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1635 return 0; 1636 } 1637 1638 1639 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1640 struct p2p_go_neg_results *res) 1641 { 1642 wpa_s->group_formation_reported = 0; 1643 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1644 " dev_addr " MACSTR " wps_method %d", 1645 MAC2STR(res->peer_interface_addr), 1646 MAC2STR(res->peer_device_addr), res->wps_method); 1647 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1648 res->ssid, res->ssid_len); 1649 wpa_supplicant_ap_deinit(wpa_s); 1650 wpas_copy_go_neg_results(wpa_s, res); 1651 if (res->wps_method == WPS_PBC) { 1652 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 1653 #ifdef CONFIG_WPS_NFC 1654 } else if (res->wps_method == WPS_NFC) { 1655 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1656 res->peer_interface_addr, 1657 wpa_s->p2pdev->p2p_oob_dev_pw, 1658 wpa_s->p2pdev->p2p_oob_dev_pw_id, 1, 1659 wpa_s->p2pdev->p2p_oob_dev_pw_id == 1660 DEV_PW_NFC_CONNECTION_HANDOVER ? 1661 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : 1662 NULL, 1663 NULL, 0, 0); 1664 #endif /* CONFIG_WPS_NFC */ 1665 } else { 1666 u16 dev_pw_id = DEV_PW_DEFAULT; 1667 if (wpa_s->p2p_wps_method == WPS_P2PS) 1668 dev_pw_id = DEV_PW_P2PS_DEFAULT; 1669 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1670 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1671 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1672 wpa_s->p2p_pin, 1, dev_pw_id); 1673 } 1674 } 1675 1676 1677 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1678 struct wpa_ssid *ssid) 1679 { 1680 struct wpa_ssid *persistent; 1681 struct psk_list_entry *psk; 1682 struct hostapd_data *hapd; 1683 1684 if (!wpa_s->ap_iface) 1685 return; 1686 1687 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 1688 ssid->ssid_len); 1689 if (persistent == NULL) 1690 return; 1691 1692 hapd = wpa_s->ap_iface->bss[0]; 1693 1694 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1695 list) { 1696 struct hostapd_wpa_psk *hpsk; 1697 1698 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1699 MACSTR " psk=%d", 1700 MAC2STR(psk->addr), psk->p2p); 1701 hpsk = os_zalloc(sizeof(*hpsk)); 1702 if (hpsk == NULL) 1703 break; 1704 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1705 if (psk->p2p) 1706 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1707 else 1708 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1709 hpsk->next = hapd->conf->ssid.wpa_psk; 1710 hapd->conf->ssid.wpa_psk = hpsk; 1711 } 1712 } 1713 1714 1715 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s) 1716 { 1717 char buf[20 + P2P_MAX_CHANNELS * 6]; 1718 char *pos, *end; 1719 unsigned int i; 1720 int res; 1721 1722 pos = buf; 1723 end = pos + sizeof(buf); 1724 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 1725 res = os_snprintf(pos, end - pos, " %d", 1726 wpa_s->p2p_group_common_freqs[i]); 1727 if (os_snprintf_error(end - pos, res)) 1728 break; 1729 pos += res; 1730 } 1731 *pos = '\0'; 1732 1733 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies:%s", buf); 1734 } 1735 1736 1737 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s, 1738 struct p2p_go_neg_results *params) 1739 { 1740 unsigned int i, len = int_array_len(wpa_s->go_params->freq_list); 1741 1742 wpa_s->p2p_group_common_freqs_num = 0; 1743 os_free(wpa_s->p2p_group_common_freqs); 1744 wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int)); 1745 if (!wpa_s->p2p_group_common_freqs) 1746 return; 1747 1748 for (i = 0; i < len; i++) { 1749 if (!wpa_s->go_params->freq_list[i]) 1750 break; 1751 wpa_s->p2p_group_common_freqs[i] = 1752 wpa_s->go_params->freq_list[i]; 1753 } 1754 wpa_s->p2p_group_common_freqs_num = i; 1755 } 1756 1757 1758 static void p2p_config_write(struct wpa_supplicant *wpa_s) 1759 { 1760 #ifndef CONFIG_NO_CONFIG_WRITE 1761 if (wpa_s->p2pdev->conf->update_config && 1762 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 1763 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 1764 #endif /* CONFIG_NO_CONFIG_WRITE */ 1765 } 1766 1767 1768 static void p2p_go_configured(void *ctx, void *data) 1769 { 1770 struct wpa_supplicant *wpa_s = ctx; 1771 struct p2p_go_neg_results *params = data; 1772 struct wpa_ssid *ssid; 1773 1774 wpa_s->ap_configured_cb = NULL; 1775 wpa_s->ap_configured_cb_ctx = NULL; 1776 wpa_s->ap_configured_cb_data = NULL; 1777 if (!wpa_s->go_params) { 1778 wpa_printf(MSG_ERROR, 1779 "P2P: p2p_go_configured() called with wpa_s->go_params == NULL"); 1780 return; 1781 } 1782 1783 p2p_go_save_group_common_freqs(wpa_s, params); 1784 p2p_go_dump_common_freqs(wpa_s); 1785 1786 ssid = wpa_s->current_ssid; 1787 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1788 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1789 if (wpa_s->global->p2p_group_formation == wpa_s) 1790 wpa_s->global->p2p_group_formation = NULL; 1791 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency, 1792 params->passphrase[0] == '\0' ? 1793 params->psk : NULL, 1794 params->passphrase, 1795 wpa_s->global->p2p_dev_addr, 1796 params->persistent_group, ""); 1797 wpa_s->group_formation_reported = 1; 1798 1799 if (wpa_s->p2pdev->p2ps_method_config_any) { 1800 if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) { 1801 wpa_dbg(wpa_s, MSG_DEBUG, 1802 "P2PS: Setting default PIN for ANY"); 1803 wpa_supplicant_ap_wps_pin(wpa_s, NULL, 1804 "12345670", NULL, 0, 1805 0); 1806 } else { 1807 wpa_dbg(wpa_s, MSG_DEBUG, 1808 "P2PS: Setting default PIN for " MACSTR, 1809 MAC2STR(wpa_s->p2pdev->p2ps_join_addr)); 1810 wpa_supplicant_ap_wps_pin( 1811 wpa_s, wpa_s->p2pdev->p2ps_join_addr, 1812 "12345670", NULL, 0, 0); 1813 } 1814 wpa_s->p2pdev->p2ps_method_config_any = 0; 1815 } 1816 1817 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1818 if (params->persistent_group) { 1819 wpas_p2p_store_persistent_group( 1820 wpa_s->p2pdev, ssid, 1821 wpa_s->global->p2p_dev_addr); 1822 wpas_p2p_add_psk_list(wpa_s, ssid); 1823 } 1824 1825 wpas_notify_p2p_group_started(wpa_s, ssid, 1826 params->persistent_group, 0, 1827 NULL); 1828 wpas_p2p_cross_connect_setup(wpa_s); 1829 wpas_p2p_set_group_idle_timeout(wpa_s); 1830 1831 if (wpa_s->p2p_first_connection_timeout) { 1832 wpa_dbg(wpa_s, MSG_DEBUG, 1833 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1834 wpa_s->p2p_first_connection_timeout); 1835 wpa_s->p2p_go_group_formation_completed = 0; 1836 wpa_s->global->p2p_group_formation = wpa_s; 1837 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1838 wpa_s->p2pdev, NULL); 1839 eloop_register_timeout( 1840 wpa_s->p2p_first_connection_timeout, 0, 1841 wpas_p2p_group_formation_timeout, 1842 wpa_s->p2pdev, NULL); 1843 } 1844 1845 return; 1846 } 1847 1848 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1849 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1850 params->peer_interface_addr)) { 1851 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1852 "filtering"); 1853 return; 1854 } 1855 if (params->wps_method == WPS_PBC) { 1856 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1857 params->peer_device_addr); 1858 #ifdef CONFIG_WPS_NFC 1859 } else if (params->wps_method == WPS_NFC) { 1860 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 1861 DEV_PW_NFC_CONNECTION_HANDOVER && 1862 !wpa_s->p2pdev->p2p_oob_dev_pw) { 1863 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1864 return; 1865 } 1866 wpas_ap_wps_add_nfc_pw( 1867 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 1868 wpa_s->p2pdev->p2p_oob_dev_pw, 1869 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 1870 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 1871 #endif /* CONFIG_WPS_NFC */ 1872 } else if (wpa_s->p2p_pin[0]) 1873 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1874 wpa_s->p2p_pin, NULL, 0, 0); 1875 os_free(wpa_s->go_params); 1876 wpa_s->go_params = NULL; 1877 } 1878 1879 1880 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1881 struct p2p_go_neg_results *params, 1882 int group_formation) 1883 { 1884 struct wpa_ssid *ssid; 1885 1886 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1887 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1888 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1889 "results"); 1890 return; 1891 } 1892 1893 ssid = wpa_config_add_network(wpa_s->conf); 1894 if (ssid == NULL) { 1895 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1896 return; 1897 } 1898 1899 wpa_s->show_group_started = 0; 1900 wpa_s->p2p_go_group_formation_completed = 0; 1901 wpa_s->group_formation_reported = 0; 1902 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 1903 1904 wpa_config_set_network_defaults(ssid); 1905 ssid->temporary = 1; 1906 ssid->p2p_group = 1; 1907 ssid->p2p_persistent_group = !!params->persistent_group; 1908 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1909 WPAS_MODE_P2P_GO; 1910 ssid->frequency = params->freq; 1911 ssid->ht40 = params->ht40; 1912 ssid->vht = params->vht; 1913 ssid->max_oper_chwidth = params->max_oper_chwidth; 1914 ssid->vht_center_freq2 = params->vht_center_freq2; 1915 ssid->ssid = os_zalloc(params->ssid_len + 1); 1916 if (ssid->ssid) { 1917 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1918 ssid->ssid_len = params->ssid_len; 1919 } 1920 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1921 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1922 ssid->proto = WPA_PROTO_RSN; 1923 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1924 ssid->group_cipher = WPA_CIPHER_CCMP; 1925 if (params->freq > 56160) { 1926 /* 1927 * Enable GCMP instead of CCMP as pairwise_cipher and 1928 * group_cipher in 60 GHz. 1929 */ 1930 ssid->pairwise_cipher = WPA_CIPHER_GCMP; 1931 ssid->group_cipher = WPA_CIPHER_GCMP; 1932 /* P2P GO in 60 GHz is always a PCP (PBSS) */ 1933 ssid->pbss = 1; 1934 } 1935 if (os_strlen(params->passphrase) > 0) { 1936 ssid->passphrase = os_strdup(params->passphrase); 1937 if (ssid->passphrase == NULL) { 1938 wpa_msg_global(wpa_s, MSG_ERROR, 1939 "P2P: Failed to copy passphrase for GO"); 1940 wpa_config_remove_network(wpa_s->conf, ssid->id); 1941 return; 1942 } 1943 } else 1944 ssid->passphrase = NULL; 1945 ssid->psk_set = params->psk_set; 1946 if (ssid->psk_set) 1947 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1948 else if (ssid->passphrase) 1949 wpa_config_update_psk(ssid); 1950 ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity; 1951 1952 wpa_s->ap_configured_cb = p2p_go_configured; 1953 wpa_s->ap_configured_cb_ctx = wpa_s; 1954 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1955 wpa_s->scan_req = NORMAL_SCAN_REQ; 1956 wpa_s->connect_without_scan = ssid; 1957 wpa_s->reassociate = 1; 1958 wpa_s->disconnected = 0; 1959 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1960 "start GO)"); 1961 wpa_supplicant_req_scan(wpa_s, 0, 0); 1962 } 1963 1964 1965 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1966 const struct wpa_supplicant *src) 1967 { 1968 struct wpa_config *d; 1969 const struct wpa_config *s; 1970 1971 d = dst->conf; 1972 s = src->conf; 1973 1974 #define C(n) \ 1975 do { \ 1976 if (s->n && !d->n) \ 1977 d->n = os_strdup(s->n); \ 1978 } while (0) 1979 1980 C(device_name); 1981 C(manufacturer); 1982 C(model_name); 1983 C(model_number); 1984 C(serial_number); 1985 C(config_methods); 1986 #undef C 1987 1988 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1989 os_memcpy(d->sec_device_type, s->sec_device_type, 1990 sizeof(d->sec_device_type)); 1991 d->num_sec_device_types = s->num_sec_device_types; 1992 1993 d->p2p_group_idle = s->p2p_group_idle; 1994 d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy; 1995 d->p2p_intra_bss = s->p2p_intra_bss; 1996 d->persistent_reconnect = s->persistent_reconnect; 1997 d->max_num_sta = s->max_num_sta; 1998 d->pbc_in_m1 = s->pbc_in_m1; 1999 d->ignore_old_scan_res = s->ignore_old_scan_res; 2000 d->beacon_int = s->beacon_int; 2001 d->dtim_period = s->dtim_period; 2002 d->p2p_go_ctwindow = s->p2p_go_ctwindow; 2003 d->disassoc_low_ack = s->disassoc_low_ack; 2004 d->disable_scan_offload = s->disable_scan_offload; 2005 d->passive_scan = s->passive_scan; 2006 2007 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey && 2008 !d->wps_nfc_pw_from_config) { 2009 wpabuf_free(d->wps_nfc_dh_privkey); 2010 wpabuf_free(d->wps_nfc_dh_pubkey); 2011 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 2012 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 2013 } 2014 d->p2p_cli_probe = s->p2p_cli_probe; 2015 d->go_interworking = s->go_interworking; 2016 d->go_access_network_type = s->go_access_network_type; 2017 d->go_internet = s->go_internet; 2018 d->go_venue_group = s->go_venue_group; 2019 d->go_venue_type = s->go_venue_type; 2020 } 2021 2022 2023 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 2024 char *ifname, size_t len) 2025 { 2026 char *ifname_ptr = wpa_s->ifname; 2027 2028 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 2029 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 2030 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 2031 } 2032 2033 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 2034 if (os_strlen(ifname) >= IFNAMSIZ && 2035 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 2036 int res; 2037 2038 /* Try to avoid going over the IFNAMSIZ length limit */ 2039 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 2040 if (os_snprintf_error(len, res) && len) 2041 ifname[len - 1] = '\0'; 2042 } 2043 } 2044 2045 2046 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 2047 enum wpa_driver_if_type type) 2048 { 2049 char ifname[120], force_ifname[120]; 2050 2051 if (wpa_s->pending_interface_name[0]) { 2052 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 2053 "- skip creation of a new one"); 2054 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 2055 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 2056 "unknown?! ifname='%s'", 2057 wpa_s->pending_interface_name); 2058 return -1; 2059 } 2060 return 0; 2061 } 2062 2063 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 2064 force_ifname[0] = '\0'; 2065 2066 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 2067 ifname); 2068 wpa_s->p2p_group_idx++; 2069 2070 wpa_s->pending_interface_type = type; 2071 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 2072 wpa_s->pending_interface_addr, NULL) < 0) { 2073 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 2074 "interface"); 2075 return -1; 2076 } 2077 2078 if (force_ifname[0]) { 2079 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 2080 force_ifname); 2081 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 2082 sizeof(wpa_s->pending_interface_name)); 2083 } else 2084 os_strlcpy(wpa_s->pending_interface_name, ifname, 2085 sizeof(wpa_s->pending_interface_name)); 2086 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 2087 MACSTR, wpa_s->pending_interface_name, 2088 MAC2STR(wpa_s->pending_interface_addr)); 2089 2090 return 0; 2091 } 2092 2093 2094 static void wpas_p2p_remove_pending_group_interface( 2095 struct wpa_supplicant *wpa_s) 2096 { 2097 if (!wpa_s->pending_interface_name[0] || 2098 is_zero_ether_addr(wpa_s->pending_interface_addr)) 2099 return; /* No pending virtual interface */ 2100 2101 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 2102 wpa_s->pending_interface_name); 2103 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 2104 wpa_s->pending_interface_name); 2105 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2106 wpa_s->pending_interface_name[0] = '\0'; 2107 wpa_s->global->pending_group_iface_for_p2ps = 0; 2108 } 2109 2110 2111 static struct wpa_supplicant * 2112 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 2113 { 2114 struct wpa_interface iface; 2115 struct wpa_supplicant *group_wpa_s; 2116 2117 if (!wpa_s->pending_interface_name[0]) { 2118 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 2119 if (!wpas_p2p_create_iface(wpa_s)) 2120 return NULL; 2121 /* 2122 * Something has forced us to remove the pending interface; try 2123 * to create a new one and hope for the best that we will get 2124 * the same local address. 2125 */ 2126 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 2127 WPA_IF_P2P_CLIENT) < 0) 2128 return NULL; 2129 } 2130 2131 os_memset(&iface, 0, sizeof(iface)); 2132 iface.ifname = wpa_s->pending_interface_name; 2133 iface.driver = wpa_s->driver->name; 2134 if (wpa_s->conf->ctrl_interface == NULL && 2135 wpa_s->parent != wpa_s && 2136 wpa_s->p2p_mgmt && 2137 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 2138 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 2139 else 2140 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 2141 iface.driver_param = wpa_s->conf->driver_param; 2142 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 2143 if (group_wpa_s == NULL) { 2144 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 2145 "wpa_supplicant interface"); 2146 return NULL; 2147 } 2148 wpa_s->pending_interface_name[0] = '\0'; 2149 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 2150 P2P_GROUP_INTERFACE_CLIENT; 2151 wpa_s->global->p2p_group_formation = group_wpa_s; 2152 wpa_s->global->pending_group_iface_for_p2ps = 0; 2153 2154 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2155 2156 return group_wpa_s; 2157 } 2158 2159 2160 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 2161 void *timeout_ctx) 2162 { 2163 struct wpa_supplicant *wpa_s = eloop_ctx; 2164 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 2165 wpas_p2p_group_formation_failed(wpa_s, 0); 2166 } 2167 2168 2169 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s, 2170 int already_deleted) 2171 { 2172 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2173 wpa_s->p2pdev, NULL); 2174 if (wpa_s->global->p2p) 2175 p2p_group_formation_failed(wpa_s->global->p2p); 2176 wpas_group_formation_completed(wpa_s, 0, already_deleted); 2177 } 2178 2179 2180 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 2181 { 2182 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 2183 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2184 wpa_s->p2pdev, NULL); 2185 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2186 wpa_s->p2pdev, NULL); 2187 wpa_s->global->p2p_fail_on_wps_complete = 0; 2188 } 2189 2190 2191 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 2192 { 2193 if (wpa_s->global->p2p_group_formation != wpa_s) 2194 return; 2195 /* Speed up group formation timeout since this cannot succeed */ 2196 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 2197 wpa_s->p2pdev, NULL); 2198 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 2199 wpa_s->p2pdev, NULL); 2200 } 2201 2202 2203 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 2204 { 2205 struct wpa_supplicant *wpa_s = ctx; 2206 struct wpa_supplicant *group_wpa_s; 2207 2208 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2209 wpa_drv_cancel_remain_on_channel(wpa_s); 2210 wpa_s->off_channel_freq = 0; 2211 wpa_s->roc_waiting_drv_freq = 0; 2212 } 2213 2214 if (res->status) { 2215 wpa_msg_global(wpa_s, MSG_INFO, 2216 P2P_EVENT_GO_NEG_FAILURE "status=%d", 2217 res->status); 2218 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2219 wpas_p2p_remove_pending_group_interface(wpa_s); 2220 return; 2221 } 2222 2223 if (!res->role_go) { 2224 /* Inform driver of the operating channel of GO. */ 2225 wpa_drv_set_prob_oper_freq(wpa_s, res->freq); 2226 } 2227 2228 if (wpa_s->p2p_go_ht40) 2229 res->ht40 = 1; 2230 if (wpa_s->p2p_go_vht) 2231 res->vht = 1; 2232 res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth; 2233 res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2; 2234 2235 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 2236 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 2237 " wps_method=%s", 2238 res->role_go ? "GO" : "client", res->freq, res->ht40, 2239 MAC2STR(res->peer_device_addr), 2240 MAC2STR(res->peer_interface_addr), 2241 p2p_wps_method_text(res->wps_method)); 2242 wpas_notify_p2p_go_neg_completed(wpa_s, res); 2243 2244 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 2245 struct wpa_ssid *ssid; 2246 ssid = wpa_config_get_network(wpa_s->conf, 2247 wpa_s->p2p_persistent_id); 2248 if (ssid && ssid->disabled == 2 && 2249 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 2250 size_t len = os_strlen(ssid->passphrase); 2251 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 2252 "on requested persistent group"); 2253 os_memcpy(res->passphrase, ssid->passphrase, len); 2254 res->passphrase[len] = '\0'; 2255 } 2256 } 2257 2258 if (wpa_s->create_p2p_iface) { 2259 group_wpa_s = 2260 wpas_p2p_init_group_interface(wpa_s, res->role_go); 2261 if (group_wpa_s == NULL) { 2262 wpas_p2p_remove_pending_group_interface(wpa_s); 2263 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 2264 wpa_s, NULL); 2265 wpas_p2p_group_formation_failed(wpa_s, 1); 2266 return; 2267 } 2268 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 2269 wpa_s->pending_interface_name[0] = '\0'; 2270 } else { 2271 group_wpa_s = wpa_s->parent; 2272 wpa_s->global->p2p_group_formation = group_wpa_s; 2273 if (group_wpa_s != wpa_s) 2274 wpas_p2p_clone_config(group_wpa_s, wpa_s); 2275 } 2276 2277 group_wpa_s->p2p_in_provisioning = 1; 2278 group_wpa_s->p2pdev = wpa_s; 2279 if (group_wpa_s != wpa_s) { 2280 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 2281 sizeof(group_wpa_s->p2p_pin)); 2282 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 2283 } 2284 if (res->role_go) { 2285 wpas_start_wps_go(group_wpa_s, res, 1); 2286 } else { 2287 os_get_reltime(&group_wpa_s->scan_min_time); 2288 wpas_start_wps_enrollee(group_wpa_s, res); 2289 } 2290 2291 wpa_s->p2p_long_listen = 0; 2292 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2293 2294 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2295 eloop_register_timeout(15 + res->peer_config_timeout / 100, 2296 (res->peer_config_timeout % 100) * 10000, 2297 wpas_p2p_group_formation_timeout, wpa_s, NULL); 2298 } 2299 2300 2301 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id, 2302 u8 go_intent) 2303 { 2304 struct wpa_supplicant *wpa_s = ctx; 2305 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 2306 " dev_passwd_id=%u go_intent=%u", MAC2STR(src), 2307 dev_passwd_id, go_intent); 2308 2309 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent); 2310 } 2311 2312 2313 static void wpas_dev_found(void *ctx, const u8 *addr, 2314 const struct p2p_peer_info *info, 2315 int new_device) 2316 { 2317 #ifndef CONFIG_NO_STDOUT_DEBUG 2318 struct wpa_supplicant *wpa_s = ctx; 2319 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2320 char *wfd_dev_info_hex = NULL; 2321 2322 #ifdef CONFIG_WIFI_DISPLAY 2323 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 2324 WFD_SUBELEM_DEVICE_INFO); 2325 #endif /* CONFIG_WIFI_DISPLAY */ 2326 2327 if (info->p2ps_instance) { 2328 char str[256]; 2329 const u8 *buf = wpabuf_head(info->p2ps_instance); 2330 size_t len = wpabuf_len(info->p2ps_instance); 2331 2332 while (len) { 2333 u32 id; 2334 u16 methods; 2335 u8 str_len; 2336 2337 if (len < 4 + 2 + 1) 2338 break; 2339 id = WPA_GET_LE32(buf); 2340 buf += sizeof(u32); 2341 methods = WPA_GET_BE16(buf); 2342 buf += sizeof(u16); 2343 str_len = *buf++; 2344 if (str_len > len - 4 - 2 - 1) 2345 break; 2346 os_memcpy(str, buf, str_len); 2347 str[str_len] = '\0'; 2348 buf += str_len; 2349 len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8); 2350 2351 wpa_msg_global(wpa_s, MSG_INFO, 2352 P2P_EVENT_DEVICE_FOUND MACSTR 2353 " p2p_dev_addr=" MACSTR 2354 " pri_dev_type=%s name='%s'" 2355 " config_methods=0x%x" 2356 " dev_capab=0x%x" 2357 " group_capab=0x%x" 2358 " adv_id=%x asp_svc=%s%s", 2359 MAC2STR(addr), 2360 MAC2STR(info->p2p_device_addr), 2361 wps_dev_type_bin2str( 2362 info->pri_dev_type, 2363 devtype, sizeof(devtype)), 2364 info->device_name, methods, 2365 info->dev_capab, info->group_capab, 2366 id, str, 2367 info->vendor_elems ? 2368 " vendor_elems=1" : ""); 2369 } 2370 goto done; 2371 } 2372 2373 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 2374 " p2p_dev_addr=" MACSTR 2375 " pri_dev_type=%s name='%s' config_methods=0x%x " 2376 "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d", 2377 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 2378 wps_dev_type_bin2str(info->pri_dev_type, devtype, 2379 sizeof(devtype)), 2380 info->device_name, info->config_methods, 2381 info->dev_capab, info->group_capab, 2382 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 2383 wfd_dev_info_hex ? wfd_dev_info_hex : "", 2384 info->vendor_elems ? " vendor_elems=1" : "", 2385 new_device); 2386 2387 done: 2388 os_free(wfd_dev_info_hex); 2389 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2390 2391 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 2392 } 2393 2394 2395 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 2396 { 2397 struct wpa_supplicant *wpa_s = ctx; 2398 2399 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 2400 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 2401 2402 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 2403 } 2404 2405 2406 static void wpas_find_stopped(void *ctx) 2407 { 2408 struct wpa_supplicant *wpa_s = ctx; 2409 2410 if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0) 2411 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed"); 2412 2413 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 2414 wpas_notify_p2p_find_stopped(wpa_s); 2415 } 2416 2417 2418 struct wpas_p2p_listen_work { 2419 unsigned int freq; 2420 unsigned int duration; 2421 struct wpabuf *probe_resp_ie; 2422 }; 2423 2424 2425 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 2426 { 2427 if (lwork == NULL) 2428 return; 2429 wpabuf_free(lwork->probe_resp_ie); 2430 os_free(lwork); 2431 } 2432 2433 2434 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 2435 { 2436 struct wpas_p2p_listen_work *lwork; 2437 2438 if (!wpa_s->p2p_listen_work) 2439 return; 2440 2441 lwork = wpa_s->p2p_listen_work->ctx; 2442 wpas_p2p_listen_work_free(lwork); 2443 radio_work_done(wpa_s->p2p_listen_work); 2444 wpa_s->p2p_listen_work = NULL; 2445 } 2446 2447 2448 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 2449 { 2450 struct wpa_supplicant *wpa_s = work->wpa_s; 2451 struct wpas_p2p_listen_work *lwork = work->ctx; 2452 unsigned int duration; 2453 2454 if (deinit) { 2455 if (work->started) { 2456 wpa_s->p2p_listen_work = NULL; 2457 wpas_stop_listen(wpa_s); 2458 } 2459 wpas_p2p_listen_work_free(lwork); 2460 return; 2461 } 2462 2463 wpa_s->p2p_listen_work = work; 2464 2465 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 2466 2467 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 2468 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 2469 "report received Probe Request frames"); 2470 wpas_p2p_listen_work_done(wpa_s); 2471 return; 2472 } 2473 2474 wpa_s->pending_listen_freq = lwork->freq; 2475 wpa_s->pending_listen_duration = lwork->duration; 2476 2477 duration = lwork->duration; 2478 #ifdef CONFIG_TESTING_OPTIONS 2479 if (wpa_s->extra_roc_dur) { 2480 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u", 2481 duration, duration + wpa_s->extra_roc_dur); 2482 duration += wpa_s->extra_roc_dur; 2483 } 2484 #endif /* CONFIG_TESTING_OPTIONS */ 2485 2486 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) { 2487 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 2488 "to remain on channel (%u MHz) for Listen " 2489 "state", lwork->freq); 2490 wpas_p2p_listen_work_done(wpa_s); 2491 wpa_s->pending_listen_freq = 0; 2492 return; 2493 } 2494 wpa_s->off_channel_freq = 0; 2495 wpa_s->roc_waiting_drv_freq = lwork->freq; 2496 } 2497 2498 2499 static int wpas_start_listen(void *ctx, unsigned int freq, 2500 unsigned int duration, 2501 const struct wpabuf *probe_resp_ie) 2502 { 2503 struct wpa_supplicant *wpa_s = ctx; 2504 struct wpas_p2p_listen_work *lwork; 2505 2506 if (wpa_s->p2p_listen_work) { 2507 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 2508 return -1; 2509 } 2510 2511 lwork = os_zalloc(sizeof(*lwork)); 2512 if (lwork == NULL) 2513 return -1; 2514 lwork->freq = freq; 2515 lwork->duration = duration; 2516 if (probe_resp_ie) { 2517 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 2518 if (lwork->probe_resp_ie == NULL) { 2519 wpas_p2p_listen_work_free(lwork); 2520 return -1; 2521 } 2522 } 2523 2524 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 2525 lwork) < 0) { 2526 wpas_p2p_listen_work_free(lwork); 2527 return -1; 2528 } 2529 2530 return 0; 2531 } 2532 2533 2534 static void wpas_stop_listen(void *ctx) 2535 { 2536 struct wpa_supplicant *wpa_s = ctx; 2537 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2538 wpa_drv_cancel_remain_on_channel(wpa_s); 2539 wpa_s->off_channel_freq = 0; 2540 wpa_s->roc_waiting_drv_freq = 0; 2541 } 2542 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 2543 2544 /* 2545 * Don't cancel Probe Request RX reporting for a connected P2P Client 2546 * handling Probe Request frames. 2547 */ 2548 if (!wpa_s->p2p_cli_probe) 2549 wpa_drv_probe_req_report(wpa_s, 0); 2550 2551 wpas_p2p_listen_work_done(wpa_s); 2552 } 2553 2554 2555 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf, 2556 unsigned int freq) 2557 { 2558 struct wpa_supplicant *wpa_s = ctx; 2559 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 2560 freq); 2561 } 2562 2563 2564 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2565 const u8 *peer, const char *params, 2566 unsigned int generated_pin) 2567 { 2568 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2569 " %08d%s", MAC2STR(peer), generated_pin, params); 2570 } 2571 2572 2573 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2574 const u8 *peer, const char *params) 2575 { 2576 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2577 "%s", MAC2STR(peer), params); 2578 } 2579 2580 2581 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2582 const u8 *dev_addr, const u8 *pri_dev_type, 2583 const char *dev_name, u16 supp_config_methods, 2584 u8 dev_capab, u8 group_capab, const u8 *group_id, 2585 size_t group_id_len) 2586 { 2587 struct wpa_supplicant *wpa_s = ctx; 2588 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2589 char params[300]; 2590 u8 empty_dev_type[8]; 2591 unsigned int generated_pin = 0; 2592 struct wpa_supplicant *group = NULL; 2593 int res; 2594 2595 if (group_id) { 2596 for (group = wpa_s->global->ifaces; group; group = group->next) 2597 { 2598 struct wpa_ssid *s = group->current_ssid; 2599 if (s != NULL && 2600 s->mode == WPAS_MODE_P2P_GO && 2601 group_id_len - ETH_ALEN == s->ssid_len && 2602 os_memcmp(group_id + ETH_ALEN, s->ssid, 2603 s->ssid_len) == 0) 2604 break; 2605 } 2606 } 2607 2608 if (pri_dev_type == NULL) { 2609 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2610 pri_dev_type = empty_dev_type; 2611 } 2612 res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2613 " pri_dev_type=%s name='%s' config_methods=0x%x " 2614 "dev_capab=0x%x group_capab=0x%x%s%s", 2615 MAC2STR(dev_addr), 2616 wps_dev_type_bin2str(pri_dev_type, devtype, 2617 sizeof(devtype)), 2618 dev_name, supp_config_methods, dev_capab, group_capab, 2619 group ? " group=" : "", 2620 group ? group->ifname : ""); 2621 if (os_snprintf_error(sizeof(params), res)) 2622 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated"); 2623 params[sizeof(params) - 1] = '\0'; 2624 2625 if (config_methods & WPS_CONFIG_DISPLAY) { 2626 if (wps_generate_pin(&generated_pin) < 0) { 2627 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2628 wpas_notify_p2p_provision_discovery( 2629 wpa_s, peer, 0 /* response */, 2630 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2631 return; 2632 } 2633 wpas_prov_disc_local_display(wpa_s, peer, params, 2634 generated_pin); 2635 } else if (config_methods & WPS_CONFIG_KEYPAD) 2636 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2637 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2638 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2639 MACSTR "%s", MAC2STR(peer), params); 2640 2641 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2642 P2P_PROV_DISC_SUCCESS, 2643 config_methods, generated_pin); 2644 } 2645 2646 2647 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2648 { 2649 struct wpa_supplicant *wpa_s = ctx; 2650 unsigned int generated_pin = 0; 2651 char params[20]; 2652 2653 if (wpa_s->pending_pd_before_join && 2654 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2655 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2656 wpa_s->pending_pd_before_join = 0; 2657 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2658 "join-existing-group operation"); 2659 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2660 return; 2661 } 2662 2663 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2664 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) { 2665 int res; 2666 2667 res = os_snprintf(params, sizeof(params), " peer_go=%d", 2668 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2669 if (os_snprintf_error(sizeof(params), res)) 2670 params[sizeof(params) - 1] = '\0'; 2671 } else 2672 params[0] = '\0'; 2673 2674 if (config_methods & WPS_CONFIG_DISPLAY) 2675 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2676 else if (config_methods & WPS_CONFIG_KEYPAD) { 2677 if (wps_generate_pin(&generated_pin) < 0) { 2678 wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN"); 2679 wpas_notify_p2p_provision_discovery( 2680 wpa_s, peer, 0 /* response */, 2681 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0); 2682 return; 2683 } 2684 wpas_prov_disc_local_display(wpa_s, peer, params, 2685 generated_pin); 2686 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2687 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2688 MACSTR "%s", MAC2STR(peer), params); 2689 2690 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2691 P2P_PROV_DISC_SUCCESS, 2692 config_methods, generated_pin); 2693 } 2694 2695 2696 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2697 enum p2p_prov_disc_status status, 2698 u32 adv_id, const u8 *adv_mac, 2699 const char *deferred_session_resp) 2700 { 2701 struct wpa_supplicant *wpa_s = ctx; 2702 2703 if (wpa_s->p2p_fallback_to_go_neg) { 2704 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2705 "failed - fall back to GO Negotiation"); 2706 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 2707 P2P_EVENT_FALLBACK_TO_GO_NEG 2708 "reason=PD-failed"); 2709 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2710 return; 2711 } 2712 2713 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2714 wpa_s->pending_pd_before_join = 0; 2715 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2716 "join-existing-group operation (no ACK for PD " 2717 "Req attempts)"); 2718 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2719 return; 2720 } 2721 2722 if (adv_id && adv_mac && deferred_session_resp) { 2723 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2724 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x" 2725 " deferred_session_resp='%s'", 2726 MAC2STR(peer), status, adv_id, 2727 deferred_session_resp); 2728 } else if (adv_id && adv_mac) { 2729 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2730 " p2p_dev_addr=" MACSTR " status=%d adv_id=%x", 2731 MAC2STR(peer), status, adv_id); 2732 } else { 2733 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2734 " p2p_dev_addr=" MACSTR " status=%d", 2735 MAC2STR(peer), status); 2736 } 2737 2738 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2739 status, 0, 0); 2740 } 2741 2742 2743 static int freq_included(struct wpa_supplicant *wpa_s, 2744 const struct p2p_channels *channels, 2745 unsigned int freq) 2746 { 2747 if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) && 2748 wpas_p2p_go_is_peer_freq(wpa_s, freq)) 2749 return 1; 2750 return 0; 2751 } 2752 2753 2754 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s) 2755 { 2756 unsigned int num = P2P_MAX_CHANNELS; 2757 int *common_freqs; 2758 int ret; 2759 2760 p2p_go_dump_common_freqs(wpa_s); 2761 common_freqs = os_calloc(num, sizeof(int)); 2762 if (!common_freqs) 2763 return; 2764 2765 ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num); 2766 if (ret < 0) { 2767 wpa_dbg(wpa_s, MSG_DEBUG, 2768 "P2P: Failed to get group common freqs"); 2769 os_free(common_freqs); 2770 return; 2771 } 2772 2773 os_free(wpa_s->p2p_group_common_freqs); 2774 wpa_s->p2p_group_common_freqs = common_freqs; 2775 wpa_s->p2p_group_common_freqs_num = num; 2776 p2p_go_dump_common_freqs(wpa_s); 2777 } 2778 2779 2780 /* 2781 * Check if the given frequency is one of the possible operating frequencies 2782 * set after the completion of the GO Negotiation. 2783 */ 2784 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq) 2785 { 2786 unsigned int i; 2787 2788 p2p_go_dump_common_freqs(wpa_s); 2789 2790 /* assume no restrictions */ 2791 if (!wpa_s->p2p_group_common_freqs_num) 2792 return 1; 2793 2794 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 2795 if (wpa_s->p2p_group_common_freqs[i] == freq) 2796 return 1; 2797 } 2798 return 0; 2799 } 2800 2801 2802 static int wpas_sta_check_ecsa(struct hostapd_data *hapd, 2803 struct sta_info *sta, void *ctx) 2804 { 2805 int *ecsa_support = ctx; 2806 2807 *ecsa_support &= sta->ecsa_supported; 2808 2809 return 0; 2810 } 2811 2812 2813 /* Check if all the peers support eCSA */ 2814 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s) 2815 { 2816 int ecsa_support = 1; 2817 2818 ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa, 2819 &ecsa_support); 2820 2821 return ecsa_support; 2822 } 2823 2824 2825 /** 2826 * Pick the best frequency to use from all the currently used frequencies. 2827 */ 2828 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s, 2829 struct wpa_used_freq_data *freqs, 2830 unsigned int num) 2831 { 2832 unsigned int i, c; 2833 2834 /* find a candidate freq that is supported by P2P */ 2835 for (c = 0; c < num; c++) 2836 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq)) 2837 break; 2838 2839 if (c == num) 2840 return 0; 2841 2842 /* once we have a candidate, try to find a 'better' one */ 2843 for (i = c + 1; i < num; i++) { 2844 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq)) 2845 continue; 2846 2847 /* 2848 * 1. Infrastructure station interfaces have higher preference. 2849 * 2. P2P Clients have higher preference. 2850 * 3. All others. 2851 */ 2852 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) { 2853 c = i; 2854 break; 2855 } 2856 2857 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT)) 2858 c = i; 2859 } 2860 return freqs[c].freq; 2861 } 2862 2863 2864 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2865 const u8 *go_dev_addr, const u8 *ssid, 2866 size_t ssid_len, int *go, u8 *group_bssid, 2867 int *force_freq, int persistent_group, 2868 const struct p2p_channels *channels, 2869 int dev_pw_id) 2870 { 2871 struct wpa_supplicant *wpa_s = ctx; 2872 struct wpa_ssid *s; 2873 struct wpa_used_freq_data *freqs; 2874 struct wpa_supplicant *grp; 2875 int best_freq; 2876 2877 if (!persistent_group) { 2878 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2879 " to join an active group (SSID: %s)", 2880 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2881 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2882 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2883 == 0 || 2884 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2885 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2886 "authorized invitation"); 2887 goto accept_inv; 2888 } 2889 2890 #ifdef CONFIG_WPS_NFC 2891 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled && 2892 dev_pw_id == wpa_s->p2p_oob_dev_pw_id) { 2893 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2894 wpa_s->p2p_wps_method = WPS_NFC; 2895 wpa_s->pending_join_wps_method = WPS_NFC; 2896 os_memcpy(wpa_s->pending_join_dev_addr, 2897 go_dev_addr, ETH_ALEN); 2898 os_memcpy(wpa_s->pending_join_iface_addr, 2899 bssid, ETH_ALEN); 2900 goto accept_inv; 2901 } 2902 #endif /* CONFIG_WPS_NFC */ 2903 2904 /* 2905 * Do not accept the invitation automatically; notify user and 2906 * request approval. 2907 */ 2908 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2909 } 2910 2911 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2912 if (grp) { 2913 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2914 "running persistent group"); 2915 if (*go) 2916 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2917 goto accept_inv; 2918 } 2919 2920 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2921 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2922 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2923 "invitation to re-invoke a persistent group"); 2924 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 2925 } else if (!wpa_s->conf->persistent_reconnect) 2926 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2927 2928 for (s = wpa_s->conf->ssid; s; s = s->next) { 2929 if (s->disabled == 2 && 2930 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2931 s->ssid_len == ssid_len && 2932 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2933 break; 2934 } 2935 2936 if (!s) { 2937 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2938 " requested reinvocation of an unknown group", 2939 MAC2STR(sa)); 2940 return P2P_SC_FAIL_UNKNOWN_GROUP; 2941 } 2942 2943 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2944 *go = 1; 2945 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2946 wpa_printf(MSG_DEBUG, "P2P: The only available " 2947 "interface is already in use - reject " 2948 "invitation"); 2949 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2950 } 2951 if (wpa_s->p2p_mgmt) 2952 os_memcpy(group_bssid, wpa_s->parent->own_addr, 2953 ETH_ALEN); 2954 else 2955 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2956 } else if (s->mode == WPAS_MODE_P2P_GO) { 2957 *go = 1; 2958 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2959 { 2960 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2961 "interface address for the group"); 2962 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2963 } 2964 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2965 ETH_ALEN); 2966 } 2967 2968 accept_inv: 2969 wpas_p2p_set_own_freq_preference(wpa_s, 0); 2970 2971 best_freq = 0; 2972 freqs = os_calloc(wpa_s->num_multichan_concurrent, 2973 sizeof(struct wpa_used_freq_data)); 2974 if (freqs) { 2975 int num_channels = wpa_s->num_multichan_concurrent; 2976 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels); 2977 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 2978 os_free(freqs); 2979 } 2980 2981 /* Get one of the frequencies currently in use */ 2982 if (best_freq > 0) { 2983 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 2984 wpas_p2p_set_own_freq_preference(wpa_s, best_freq); 2985 2986 if (wpa_s->num_multichan_concurrent < 2 || 2987 wpas_p2p_num_unused_channels(wpa_s) < 1) { 2988 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 2989 *force_freq = best_freq; 2990 } 2991 } 2992 2993 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 2994 wpas_p2p_num_unused_channels(wpa_s) > 0) { 2995 if (*go == 0) { 2996 /* We are the client */ 2997 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 2998 "running a GO but we are capable of MCC, " 2999 "figure out the best channel to use"); 3000 *force_freq = 0; 3001 } else if (!freq_included(wpa_s, channels, *force_freq)) { 3002 /* We are the GO, and *force_freq is not in the 3003 * intersection */ 3004 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 3005 "in intersection but we are capable of MCC, " 3006 "figure out the best channel to use", 3007 *force_freq); 3008 *force_freq = 0; 3009 } 3010 } 3011 3012 return P2P_SC_SUCCESS; 3013 } 3014 3015 3016 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 3017 const u8 *ssid, size_t ssid_len, 3018 const u8 *go_dev_addr, u8 status, 3019 int op_freq) 3020 { 3021 struct wpa_supplicant *wpa_s = ctx; 3022 struct wpa_ssid *s; 3023 3024 for (s = wpa_s->conf->ssid; s; s = s->next) { 3025 if (s->disabled == 2 && 3026 s->ssid_len == ssid_len && 3027 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3028 break; 3029 } 3030 3031 if (status == P2P_SC_SUCCESS) { 3032 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3033 " was accepted; op_freq=%d MHz, SSID=%s", 3034 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 3035 if (s) { 3036 int go = s->mode == WPAS_MODE_P2P_GO; 3037 if (go) { 3038 wpa_msg_global(wpa_s, MSG_INFO, 3039 P2P_EVENT_INVITATION_ACCEPTED 3040 "sa=" MACSTR 3041 " persistent=%d freq=%d", 3042 MAC2STR(sa), s->id, op_freq); 3043 } else { 3044 wpa_msg_global(wpa_s, MSG_INFO, 3045 P2P_EVENT_INVITATION_ACCEPTED 3046 "sa=" MACSTR 3047 " persistent=%d", 3048 MAC2STR(sa), s->id); 3049 } 3050 wpas_p2p_group_add_persistent( 3051 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL, 3052 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 3053 1); 3054 } else if (bssid) { 3055 wpa_s->user_initiated_pd = 0; 3056 wpa_msg_global(wpa_s, MSG_INFO, 3057 P2P_EVENT_INVITATION_ACCEPTED 3058 "sa=" MACSTR " go_dev_addr=" MACSTR 3059 " bssid=" MACSTR " unknown-network", 3060 MAC2STR(sa), MAC2STR(go_dev_addr), 3061 MAC2STR(bssid)); 3062 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 3063 wpa_s->p2p_wps_method, 0, op_freq, 3064 ssid, ssid_len); 3065 } 3066 return; 3067 } 3068 3069 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3070 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3071 " was rejected (status %u)", MAC2STR(sa), status); 3072 return; 3073 } 3074 3075 if (!s) { 3076 if (bssid) { 3077 wpa_msg_global(wpa_s, MSG_INFO, 3078 P2P_EVENT_INVITATION_RECEIVED 3079 "sa=" MACSTR " go_dev_addr=" MACSTR 3080 " bssid=" MACSTR " unknown-network", 3081 MAC2STR(sa), MAC2STR(go_dev_addr), 3082 MAC2STR(bssid)); 3083 } else { 3084 wpa_msg_global(wpa_s, MSG_INFO, 3085 P2P_EVENT_INVITATION_RECEIVED 3086 "sa=" MACSTR " go_dev_addr=" MACSTR 3087 " unknown-network", 3088 MAC2STR(sa), MAC2STR(go_dev_addr)); 3089 } 3090 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, 3091 bssid, 0, op_freq); 3092 return; 3093 } 3094 3095 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3096 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3097 "sa=" MACSTR " persistent=%d freq=%d", 3098 MAC2STR(sa), s->id, op_freq); 3099 } else { 3100 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3101 "sa=" MACSTR " persistent=%d", 3102 MAC2STR(sa), s->id); 3103 } 3104 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid, 3105 s->id, op_freq); 3106 } 3107 3108 3109 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3110 struct wpa_ssid *ssid, 3111 const u8 *peer, int inv) 3112 { 3113 size_t i; 3114 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 3115 3116 if (ssid == NULL) 3117 return; 3118 3119 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3120 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer, 3121 ETH_ALEN) == 0) 3122 break; 3123 } 3124 if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) { 3125 if (ssid->mode != WPAS_MODE_P2P_GO && 3126 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3127 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3128 "due to invitation result", ssid->id); 3129 wpas_notify_network_removed(wpa_s, ssid); 3130 wpa_config_remove_network(wpa_s->conf, ssid->id); 3131 return; 3132 } 3133 return; /* Peer not found in client list */ 3134 } 3135 3136 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3137 "group %d client list%s", 3138 MAC2STR(peer), ssid->id, 3139 inv ? " due to invitation result" : ""); 3140 os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN, 3141 ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3142 (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3143 ssid->num_p2p_clients--; 3144 if (p2p_wpa_s->conf->update_config && 3145 wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf)) 3146 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3147 } 3148 3149 3150 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3151 const u8 *peer) 3152 { 3153 struct wpa_ssid *ssid; 3154 3155 wpa_s = wpa_s->global->p2p_invite_group; 3156 if (wpa_s == NULL) 3157 return; /* No known invitation group */ 3158 ssid = wpa_s->current_ssid; 3159 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3160 !ssid->p2p_persistent_group) 3161 return; /* Not operating as a GO in persistent group */ 3162 ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer, 3163 ssid->ssid, ssid->ssid_len); 3164 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3165 } 3166 3167 3168 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3169 const struct p2p_channels *channels, 3170 const u8 *peer, int neg_freq, 3171 int peer_oper_freq) 3172 { 3173 struct wpa_supplicant *wpa_s = ctx; 3174 struct wpa_ssid *ssid; 3175 int freq; 3176 3177 if (bssid) { 3178 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3179 "status=%d " MACSTR, 3180 status, MAC2STR(bssid)); 3181 } else { 3182 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3183 "status=%d ", status); 3184 } 3185 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3186 3187 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3188 status, MAC2STR(peer)); 3189 if (wpa_s->pending_invite_ssid_id == -1) { 3190 struct wpa_supplicant *group_if = 3191 wpa_s->global->p2p_invite_group; 3192 3193 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3194 wpas_remove_persistent_client(wpa_s, peer); 3195 3196 /* 3197 * Invitation to an active group. If this is successful and we 3198 * are the GO, set the client wait to postpone some concurrent 3199 * operations and to allow provisioning and connection to happen 3200 * more quickly. 3201 */ 3202 if (status == P2P_SC_SUCCESS && 3203 group_if && group_if->current_ssid && 3204 group_if->current_ssid->mode == WPAS_MODE_P2P_GO) { 3205 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 3206 #ifdef CONFIG_TESTING_OPTIONS 3207 if (group_if->p2p_go_csa_on_inv) { 3208 wpa_printf(MSG_DEBUG, 3209 "Testing: force P2P GO CSA after invitation"); 3210 eloop_cancel_timeout( 3211 wpas_p2p_reconsider_moving_go, 3212 wpa_s, NULL); 3213 eloop_register_timeout( 3214 0, 50000, 3215 wpas_p2p_reconsider_moving_go, 3216 wpa_s, NULL); 3217 } 3218 #endif /* CONFIG_TESTING_OPTIONS */ 3219 } 3220 return; 3221 } 3222 3223 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3224 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3225 "invitation exchange to indicate readiness for " 3226 "re-invocation"); 3227 } 3228 3229 if (status != P2P_SC_SUCCESS) { 3230 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3231 ssid = wpa_config_get_network( 3232 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3233 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3234 } 3235 wpas_p2p_remove_pending_group_interface(wpa_s); 3236 return; 3237 } 3238 3239 ssid = wpa_config_get_network(wpa_s->conf, 3240 wpa_s->pending_invite_ssid_id); 3241 if (ssid == NULL) { 3242 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3243 "data matching with invitation"); 3244 return; 3245 } 3246 3247 /* 3248 * The peer could have missed our ctrl::ack frame for Invitation 3249 * Response and continue retransmitting the frame. To reduce the 3250 * likelihood of the peer not getting successful TX status for the 3251 * Invitation Response frame, wait a short time here before starting 3252 * the persistent group so that we will remain on the current channel to 3253 * acknowledge any possible retransmission from the peer. 3254 */ 3255 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3256 "starting persistent group"); 3257 os_sleep(0, 50000); 3258 3259 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3260 freq_included(wpa_s, channels, neg_freq)) 3261 freq = neg_freq; 3262 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3263 freq_included(wpa_s, channels, peer_oper_freq)) 3264 freq = peer_oper_freq; 3265 else 3266 freq = 0; 3267 3268 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3269 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3270 wpas_p2p_group_add_persistent(wpa_s, ssid, 3271 ssid->mode == WPAS_MODE_P2P_GO, 3272 wpa_s->p2p_persistent_go_freq, 3273 freq, 3274 wpa_s->p2p_go_vht_center_freq2, 3275 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3276 wpa_s->p2p_go_max_oper_chwidth, 3277 channels, 3278 ssid->mode == WPAS_MODE_P2P_GO ? 3279 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3280 0, 1); 3281 } 3282 3283 3284 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3285 unsigned int freq) 3286 { 3287 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3288 return 1; 3289 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3290 } 3291 3292 3293 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3294 { 3295 reg->channel[reg->channels] = chan; 3296 reg->channels++; 3297 } 3298 3299 3300 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3301 struct p2p_channels *chan, 3302 struct p2p_channels *cli_chan) 3303 { 3304 int i, cla = 0; 3305 3306 wpa_s->global->p2p_24ghz_social_channels = 1; 3307 3308 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3309 3310 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3311 "band"); 3312 3313 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3314 chan->reg_class[cla].reg_class = 81; 3315 chan->reg_class[cla].channels = 0; 3316 for (i = 0; i < 11; i++) { 3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3318 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3319 } 3320 if (chan->reg_class[cla].channels) 3321 cla++; 3322 3323 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3324 "band"); 3325 3326 /* Operating class 115 - 5 GHz, channels 36-48 */ 3327 chan->reg_class[cla].reg_class = 115; 3328 chan->reg_class[cla].channels = 0; 3329 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3330 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3331 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3332 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3333 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3334 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3335 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3336 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3337 if (chan->reg_class[cla].channels) 3338 cla++; 3339 3340 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3341 "band"); 3342 3343 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3344 chan->reg_class[cla].reg_class = 124; 3345 chan->reg_class[cla].channels = 0; 3346 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3347 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3348 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3349 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3350 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3351 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3352 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3353 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3354 if (chan->reg_class[cla].channels) 3355 cla++; 3356 3357 chan->reg_classes = cla; 3358 return 0; 3359 } 3360 3361 3362 static int has_channel(struct wpa_global *global, 3363 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3364 { 3365 int i; 3366 unsigned int freq; 3367 3368 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3369 chan * 5; 3370 if (wpas_p2p_disallowed_freq(global, freq)) 3371 return NOT_ALLOWED; 3372 3373 for (i = 0; i < mode->num_channels; i++) { 3374 if (mode->channels[i].chan == chan) { 3375 if (flags) 3376 *flags = mode->channels[i].flag; 3377 if (mode->channels[i].flag & 3378 (HOSTAPD_CHAN_DISABLED | 3379 HOSTAPD_CHAN_RADAR)) 3380 return NOT_ALLOWED; 3381 if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR) 3382 return NO_IR; 3383 return ALLOWED; 3384 } 3385 } 3386 3387 return NOT_ALLOWED; 3388 } 3389 3390 3391 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3392 struct hostapd_hw_modes *mode, 3393 u8 channel) 3394 { 3395 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3396 size_t i; 3397 3398 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3399 return 0; 3400 3401 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3402 /* 3403 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3404 * so the center channel is 6 channels away from the start/end. 3405 */ 3406 if (channel >= center_channels[i] - 6 && 3407 channel <= center_channels[i] + 6) 3408 return center_channels[i]; 3409 3410 return 0; 3411 } 3412 3413 3414 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3415 struct hostapd_hw_modes *mode, 3416 u8 channel, u8 bw) 3417 { 3418 u8 center_chan; 3419 int i, flags; 3420 enum chan_allowed res, ret = ALLOWED; 3421 3422 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3423 if (!center_chan) 3424 return NOT_ALLOWED; 3425 if (center_chan >= 58 && center_chan <= 138) 3426 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3427 3428 /* check all the channels are available */ 3429 for (i = 0; i < 4; i++) { 3430 int adj_chan = center_chan - 6 + i * 4; 3431 3432 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3433 if (res == NOT_ALLOWED) 3434 return NOT_ALLOWED; 3435 if (res == NO_IR) 3436 ret = NO_IR; 3437 3438 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3439 return NOT_ALLOWED; 3440 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3441 return NOT_ALLOWED; 3442 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3443 return NOT_ALLOWED; 3444 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3445 return NOT_ALLOWED; 3446 } 3447 3448 return ret; 3449 } 3450 3451 3452 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s, 3453 struct hostapd_hw_modes *mode, 3454 u8 channel) 3455 { 3456 u8 center_channels[] = { 50, 114 }; 3457 unsigned int i; 3458 3459 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3460 return 0; 3461 3462 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3463 /* 3464 * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64), 3465 * so the center channel is 14 channels away from the start/end. 3466 */ 3467 if (channel >= center_channels[i] - 14 && 3468 channel <= center_channels[i] + 14) 3469 return center_channels[i]; 3470 3471 return 0; 3472 } 3473 3474 3475 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s, 3476 struct hostapd_hw_modes *mode, 3477 u8 channel, u8 bw) 3478 { 3479 u8 center_chan; 3480 int i, flags; 3481 enum chan_allowed res, ret = ALLOWED; 3482 3483 center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3484 if (!center_chan) 3485 return NOT_ALLOWED; 3486 /* VHT 160 MHz uses DFS channels in most countries. */ 3487 3488 /* Check all the channels are available */ 3489 for (i = 0; i < 8; i++) { 3490 int adj_chan = center_chan - 14 + i * 4; 3491 3492 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3493 if (res == NOT_ALLOWED) 3494 return NOT_ALLOWED; 3495 3496 if (res == NO_IR) 3497 ret = NO_IR; 3498 3499 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150)) 3500 return NOT_ALLOWED; 3501 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130)) 3502 return NOT_ALLOWED; 3503 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110)) 3504 return NOT_ALLOWED; 3505 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90)) 3506 return NOT_ALLOWED; 3507 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70)) 3508 return NOT_ALLOWED; 3509 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50)) 3510 return NOT_ALLOWED; 3511 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30)) 3512 return NOT_ALLOWED; 3513 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10)) 3514 return NOT_ALLOWED; 3515 } 3516 3517 return ret; 3518 } 3519 3520 3521 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3522 struct hostapd_hw_modes *mode, 3523 u8 channel, u8 bw) 3524 { 3525 int flag = 0; 3526 enum chan_allowed res, res2; 3527 3528 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3529 if (bw == BW40MINUS) { 3530 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3531 return NOT_ALLOWED; 3532 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3533 } else if (bw == BW40PLUS) { 3534 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3535 return NOT_ALLOWED; 3536 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3537 } else if (bw == BW80) { 3538 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3539 } else if (bw == BW160) { 3540 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw); 3541 } 3542 3543 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3544 return NOT_ALLOWED; 3545 if (res == NO_IR || res2 == NO_IR) 3546 return NO_IR; 3547 return res; 3548 } 3549 3550 3551 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3552 struct p2p_channels *chan, 3553 struct p2p_channels *cli_chan) 3554 { 3555 struct hostapd_hw_modes *mode; 3556 int cla, op, cli_cla; 3557 3558 if (wpa_s->hw.modes == NULL) { 3559 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3560 "of all supported channels; assume dualband " 3561 "support"); 3562 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3563 } 3564 3565 cla = cli_cla = 0; 3566 3567 for (op = 0; global_op_class[op].op_class; op++) { 3568 const struct oper_class_map *o = &global_op_class[op]; 3569 u8 ch; 3570 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3571 3572 if (o->p2p == NO_P2P_SUPP) 3573 continue; 3574 3575 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3576 if (mode == NULL) 3577 continue; 3578 if (mode->mode == HOSTAPD_MODE_IEEE80211G) 3579 wpa_s->global->p2p_24ghz_social_channels = 1; 3580 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3581 enum chan_allowed res; 3582 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3583 if (res == ALLOWED) { 3584 if (reg == NULL) { 3585 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3586 o->op_class); 3587 reg = &chan->reg_class[cla]; 3588 cla++; 3589 reg->reg_class = o->op_class; 3590 } 3591 reg->channel[reg->channels] = ch; 3592 reg->channels++; 3593 } else if (res == NO_IR && 3594 wpa_s->conf->p2p_add_cli_chan) { 3595 if (cli_reg == NULL) { 3596 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3597 o->op_class); 3598 cli_reg = &cli_chan->reg_class[cli_cla]; 3599 cli_cla++; 3600 cli_reg->reg_class = o->op_class; 3601 } 3602 cli_reg->channel[cli_reg->channels] = ch; 3603 cli_reg->channels++; 3604 } 3605 } 3606 if (reg) { 3607 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3608 reg->channel, reg->channels); 3609 } 3610 if (cli_reg) { 3611 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3612 cli_reg->channel, cli_reg->channels); 3613 } 3614 } 3615 3616 chan->reg_classes = cla; 3617 cli_chan->reg_classes = cli_cla; 3618 3619 return 0; 3620 } 3621 3622 3623 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3624 struct hostapd_hw_modes *mode, u8 channel) 3625 { 3626 int op; 3627 enum chan_allowed ret; 3628 3629 for (op = 0; global_op_class[op].op_class; op++) { 3630 const struct oper_class_map *o = &global_op_class[op]; 3631 u8 ch; 3632 3633 if (o->p2p == NO_P2P_SUPP) 3634 continue; 3635 3636 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3637 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3638 (o->bw != BW40PLUS && o->bw != BW40MINUS) || 3639 ch != channel) 3640 continue; 3641 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3642 if (ret == ALLOWED) 3643 return (o->bw == BW40MINUS) ? -1 : 1; 3644 } 3645 } 3646 return 0; 3647 } 3648 3649 3650 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3651 struct hostapd_hw_modes *mode, u8 channel) 3652 { 3653 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3654 return 0; 3655 3656 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3657 } 3658 3659 3660 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s, 3661 struct hostapd_hw_modes *mode, u8 channel) 3662 { 3663 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160)) 3664 return 0; 3665 return wpas_p2p_get_center_160mhz(wpa_s, mode, channel); 3666 } 3667 3668 3669 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3670 size_t buf_len) 3671 { 3672 struct wpa_supplicant *wpa_s = ctx; 3673 3674 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3675 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3676 break; 3677 } 3678 if (wpa_s == NULL) 3679 return -1; 3680 3681 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3682 } 3683 3684 3685 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s, 3686 const u8 *ssid, size_t ssid_len) 3687 { 3688 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3689 struct wpa_ssid *s = wpa_s->current_ssid; 3690 if (s == NULL) 3691 continue; 3692 if (s->mode != WPAS_MODE_P2P_GO && 3693 s->mode != WPAS_MODE_AP && 3694 s->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3695 continue; 3696 if (s->ssid_len != ssid_len || 3697 os_memcmp(ssid, s->ssid, ssid_len) != 0) 3698 continue; 3699 return wpa_s; 3700 } 3701 3702 return NULL; 3703 3704 } 3705 3706 3707 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s, 3708 const u8 *peer_dev_addr) 3709 { 3710 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3711 struct wpa_ssid *ssid = wpa_s->current_ssid; 3712 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group)) 3713 continue; 3714 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0) 3715 return wpa_s; 3716 } 3717 3718 return NULL; 3719 } 3720 3721 3722 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3723 { 3724 struct wpa_supplicant *wpa_s = ctx; 3725 3726 return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL; 3727 } 3728 3729 3730 static int wpas_is_concurrent_session_active(void *ctx) 3731 { 3732 struct wpa_supplicant *wpa_s = ctx; 3733 struct wpa_supplicant *ifs; 3734 3735 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3736 if (ifs == wpa_s) 3737 continue; 3738 if (ifs->wpa_state > WPA_ASSOCIATED) 3739 return 1; 3740 } 3741 return 0; 3742 } 3743 3744 3745 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3746 { 3747 struct wpa_supplicant *wpa_s = ctx; 3748 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3749 } 3750 3751 3752 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s, 3753 const char *conf_p2p_dev) 3754 { 3755 struct wpa_interface iface; 3756 struct wpa_supplicant *p2pdev_wpa_s; 3757 char ifname[100]; 3758 char force_name[100]; 3759 int ret; 3760 3761 ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3762 wpa_s->ifname); 3763 if (os_snprintf_error(sizeof(ifname), ret)) 3764 return -1; 3765 force_name[0] = '\0'; 3766 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3767 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3768 force_name, wpa_s->pending_interface_addr, NULL); 3769 if (ret < 0) { 3770 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3771 return ret; 3772 } 3773 os_strlcpy(wpa_s->pending_interface_name, ifname, 3774 sizeof(wpa_s->pending_interface_name)); 3775 3776 os_memset(&iface, 0, sizeof(iface)); 3777 iface.p2p_mgmt = 1; 3778 iface.ifname = wpa_s->pending_interface_name; 3779 iface.driver = wpa_s->driver->name; 3780 iface.driver_param = wpa_s->conf->driver_param; 3781 3782 /* 3783 * If a P2P Device configuration file was given, use it as the interface 3784 * configuration file (instead of using parent's configuration file. 3785 */ 3786 if (conf_p2p_dev) { 3787 iface.confname = conf_p2p_dev; 3788 iface.ctrl_interface = NULL; 3789 } else { 3790 iface.confname = wpa_s->confname; 3791 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3792 } 3793 3794 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s); 3795 if (!p2pdev_wpa_s) { 3796 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3797 return -1; 3798 } 3799 3800 p2pdev_wpa_s->p2pdev = p2pdev_wpa_s; 3801 wpa_s->pending_interface_name[0] = '\0'; 3802 return 0; 3803 } 3804 3805 3806 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3807 const u8 *noa, size_t noa_len) 3808 { 3809 struct wpa_supplicant *wpa_s, *intf = ctx; 3810 char hex[100]; 3811 3812 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3813 if (wpa_s->waiting_presence_resp) 3814 break; 3815 } 3816 if (!wpa_s) { 3817 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3818 return; 3819 } 3820 wpa_s->waiting_presence_resp = 0; 3821 3822 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3823 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3824 " status=%u noa=%s", MAC2STR(src), status, hex); 3825 } 3826 3827 3828 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid, 3829 size_t ssid_len, u8 *go_dev_addr, 3830 u8 *ret_ssid, size_t *ret_ssid_len, 3831 u8 *intended_iface_addr) 3832 { 3833 struct wpa_supplicant *wpa_s = ctx; 3834 struct wpa_ssid *s; 3835 3836 s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len); 3837 if (s) { 3838 os_memcpy(ret_ssid, s->ssid, s->ssid_len); 3839 *ret_ssid_len = s->ssid_len; 3840 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN); 3841 3842 if (s->mode != WPAS_MODE_P2P_GO) { 3843 os_memset(intended_iface_addr, 0, ETH_ALEN); 3844 } else if (wpas_p2p_create_iface(wpa_s)) { 3845 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO)) 3846 return 0; 3847 3848 os_memcpy(intended_iface_addr, 3849 wpa_s->pending_interface_addr, ETH_ALEN); 3850 } else { 3851 os_memcpy(intended_iface_addr, wpa_s->own_addr, 3852 ETH_ALEN); 3853 } 3854 return 1; 3855 } 3856 3857 return 0; 3858 } 3859 3860 3861 static int wpas_get_go_info(void *ctx, u8 *intended_addr, 3862 u8 *ssid, size_t *ssid_len, int *group_iface, 3863 unsigned int *freq) 3864 { 3865 struct wpa_supplicant *wpa_s = ctx; 3866 struct wpa_supplicant *go; 3867 struct wpa_ssid *s; 3868 3869 /* 3870 * group_iface will be set to 1 only if a dedicated interface for P2P 3871 * role is required. First, we try to reuse an active GO. However, 3872 * if it is not present, we will try to reactivate an existing 3873 * persistent group and set group_iface to 1, so the caller will know 3874 * that the pending interface should be used. 3875 */ 3876 *group_iface = 0; 3877 3878 if (freq) 3879 *freq = 0; 3880 3881 go = wpas_p2p_get_go_group(wpa_s); 3882 if (!go) { 3883 s = wpas_p2p_get_persistent_go(wpa_s); 3884 *group_iface = wpas_p2p_create_iface(wpa_s); 3885 if (s) 3886 os_memcpy(intended_addr, s->bssid, ETH_ALEN); 3887 else 3888 return 0; 3889 } else { 3890 s = go->current_ssid; 3891 os_memcpy(intended_addr, go->own_addr, ETH_ALEN); 3892 if (freq) 3893 *freq = go->assoc_freq; 3894 } 3895 3896 os_memcpy(ssid, s->ssid, s->ssid_len); 3897 *ssid_len = s->ssid_len; 3898 3899 return 1; 3900 } 3901 3902 3903 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go, 3904 const u8 *ssid, size_t ssid_len) 3905 { 3906 struct wpa_supplicant *wpa_s = ctx; 3907 struct wpa_ssid *s; 3908 int save_config = 0; 3909 size_t i; 3910 3911 /* Start with our first choice of Persistent Groups */ 3912 while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) { 3913 if (go && ssid && ssid_len && 3914 s->ssid_len == ssid_len && 3915 os_memcmp(go, s->bssid, ETH_ALEN) == 0 && 3916 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3917 break; 3918 3919 /* Remove stale persistent group */ 3920 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) { 3921 wpa_config_remove_network(wpa_s->conf, s->id); 3922 save_config = 1; 3923 continue; 3924 } 3925 3926 for (i = 0; i < s->num_p2p_clients; i++) { 3927 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 3928 peer, ETH_ALEN) != 0) 3929 continue; 3930 3931 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN, 3932 s->p2p_client_list + (i + 1) * 2 * ETH_ALEN, 3933 (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN); 3934 break; 3935 } 3936 s->num_p2p_clients--; 3937 save_config = 1; 3938 } 3939 3940 if (save_config) 3941 p2p_config_write(wpa_s); 3942 3943 /* Return TRUE if valid SSID remains */ 3944 return s != NULL; 3945 } 3946 3947 3948 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len, 3949 const u8 *feat_cap, size_t feat_cap_len) 3950 { 3951 static const char pref[] = " feature_cap="; 3952 int ret; 3953 3954 buf[0] = '\0'; 3955 3956 /* 3957 * We expect a feature capability to contain at least one byte to be 3958 * reported. The string buffer provided by the caller function is 3959 * expected to be big enough to contain all bytes of the attribute for 3960 * known specifications. This function truncates the reported bytes if 3961 * the feature capability data exceeds the string buffer size. 3962 */ 3963 if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2) 3964 return; 3965 3966 os_memcpy(buf, pref, sizeof(pref)); 3967 ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1], 3968 buf_len - sizeof(pref) + 1, 3969 feat_cap, feat_cap_len); 3970 3971 if (ret != (2 * (int) feat_cap_len)) 3972 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated"); 3973 } 3974 3975 3976 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev, 3977 const u8 *adv_mac, const u8 *ses_mac, 3978 const u8 *grp_mac, u32 adv_id, u32 ses_id, 3979 u8 conncap, int passwd_id, 3980 const u8 *persist_ssid, 3981 size_t persist_ssid_size, int response_done, 3982 int prov_start, const char *session_info, 3983 const u8 *feat_cap, size_t feat_cap_len, 3984 unsigned int freq, 3985 const u8 *group_ssid, size_t group_ssid_len) 3986 { 3987 struct wpa_supplicant *wpa_s = ctx; 3988 u8 mac[ETH_ALEN]; 3989 struct wpa_ssid *persistent_go, *stale, *s = NULL; 3990 int save_config = 0; 3991 struct wpa_supplicant *go_wpa_s; 3992 char feat_cap_str[256]; 3993 3994 if (!dev) 3995 return; 3996 3997 os_memset(mac, 0, ETH_ALEN); 3998 if (!adv_mac) 3999 adv_mac = mac; 4000 if (!ses_mac) 4001 ses_mac = mac; 4002 if (!grp_mac) 4003 grp_mac = mac; 4004 4005 wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str), 4006 feat_cap, feat_cap_len); 4007 4008 if (prov_start) { 4009 if (session_info == NULL) { 4010 wpa_msg_global(wpa_s, MSG_INFO, 4011 P2P_EVENT_P2PS_PROVISION_START MACSTR 4012 " adv_id=%x conncap=%x" 4013 " adv_mac=" MACSTR 4014 " session=%x mac=" MACSTR 4015 " dev_passwd_id=%d%s", 4016 MAC2STR(dev), adv_id, conncap, 4017 MAC2STR(adv_mac), 4018 ses_id, MAC2STR(ses_mac), 4019 passwd_id, feat_cap_str); 4020 } else { 4021 wpa_msg_global(wpa_s, MSG_INFO, 4022 P2P_EVENT_P2PS_PROVISION_START MACSTR 4023 " adv_id=%x conncap=%x" 4024 " adv_mac=" MACSTR 4025 " session=%x mac=" MACSTR 4026 " dev_passwd_id=%d info='%s'%s", 4027 MAC2STR(dev), adv_id, conncap, 4028 MAC2STR(adv_mac), 4029 ses_id, MAC2STR(ses_mac), 4030 passwd_id, session_info, feat_cap_str); 4031 } 4032 return; 4033 } 4034 4035 go_wpa_s = wpas_p2p_get_go_group(wpa_s); 4036 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4037 4038 if (status && status != P2P_SC_SUCCESS_DEFERRED) { 4039 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4040 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4041 4042 if (persistent_go && !persistent_go->num_p2p_clients) { 4043 /* remove empty persistent GO */ 4044 wpa_config_remove_network(wpa_s->conf, 4045 persistent_go->id); 4046 } 4047 4048 wpa_msg_global(wpa_s, MSG_INFO, 4049 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4050 " status=%d" 4051 " adv_id=%x adv_mac=" MACSTR 4052 " session=%x mac=" MACSTR "%s", 4053 MAC2STR(dev), status, 4054 adv_id, MAC2STR(adv_mac), 4055 ses_id, MAC2STR(ses_mac), feat_cap_str); 4056 return; 4057 } 4058 4059 /* Clean up stale persistent groups with this device */ 4060 if (persist_ssid && persist_ssid_size) 4061 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid, 4062 persist_ssid_size); 4063 4064 if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO && 4065 is_zero_ether_addr(grp_mac)) { 4066 wpa_dbg(wpa_s, MSG_ERROR, 4067 "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address"); 4068 return; 4069 } 4070 4071 for (;;) { 4072 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0); 4073 if (!stale) 4074 break; 4075 4076 if (s && s->ssid_len == stale->ssid_len && 4077 os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 && 4078 os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0) 4079 break; 4080 4081 /* Remove stale persistent group */ 4082 if (stale->mode != WPAS_MODE_P2P_GO || 4083 stale->num_p2p_clients <= 1) { 4084 wpa_config_remove_network(wpa_s->conf, stale->id); 4085 } else { 4086 size_t i; 4087 4088 for (i = 0; i < stale->num_p2p_clients; i++) { 4089 if (os_memcmp(stale->p2p_client_list + 4090 i * ETH_ALEN, 4091 dev, ETH_ALEN) == 0) { 4092 os_memmove(stale->p2p_client_list + 4093 i * ETH_ALEN, 4094 stale->p2p_client_list + 4095 (i + 1) * ETH_ALEN, 4096 (stale->num_p2p_clients - 4097 i - 1) * ETH_ALEN); 4098 break; 4099 } 4100 } 4101 stale->num_p2p_clients--; 4102 } 4103 save_config = 1; 4104 } 4105 4106 if (save_config) 4107 p2p_config_write(wpa_s); 4108 4109 if (s) { 4110 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4111 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4112 4113 if (persistent_go && s != persistent_go && 4114 !persistent_go->num_p2p_clients) { 4115 /* remove empty persistent GO */ 4116 wpa_config_remove_network(wpa_s->conf, 4117 persistent_go->id); 4118 /* Save config */ 4119 } 4120 4121 wpa_msg_global(wpa_s, MSG_INFO, 4122 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4123 " status=%d" 4124 " adv_id=%x adv_mac=" MACSTR 4125 " session=%x mac=" MACSTR 4126 " persist=%d%s", 4127 MAC2STR(dev), status, 4128 adv_id, MAC2STR(adv_mac), 4129 ses_id, MAC2STR(ses_mac), s->id, feat_cap_str); 4130 return; 4131 } 4132 4133 if (conncap == P2PS_SETUP_GROUP_OWNER) { 4134 /* 4135 * We need to copy the interface name. Simply saving a 4136 * pointer isn't enough, since if we use pending_interface_name 4137 * it will be overwritten when the group is added. 4138 */ 4139 char go_ifname[100]; 4140 4141 go_ifname[0] = '\0'; 4142 if (!go_wpa_s) { 4143 wpa_s->global->pending_p2ps_group = 1; 4144 wpa_s->global->pending_p2ps_group_freq = freq; 4145 4146 if (!wpas_p2p_create_iface(wpa_s)) 4147 os_memcpy(go_ifname, wpa_s->ifname, 4148 sizeof(go_ifname)); 4149 else if (wpa_s->pending_interface_name[0]) 4150 os_memcpy(go_ifname, 4151 wpa_s->pending_interface_name, 4152 sizeof(go_ifname)); 4153 4154 if (!go_ifname[0]) { 4155 wpas_p2ps_prov_complete( 4156 wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP, 4157 dev, adv_mac, ses_mac, 4158 grp_mac, adv_id, ses_id, 0, 0, 4159 NULL, 0, 0, 0, NULL, NULL, 0, 0, 4160 NULL, 0); 4161 return; 4162 } 4163 4164 /* If PD Resp complete, start up the GO */ 4165 if (response_done && persistent_go) { 4166 wpas_p2p_group_add_persistent( 4167 wpa_s, persistent_go, 4168 0, 0, freq, 0, 0, 0, 0, NULL, 4169 persistent_go->mode == 4170 WPAS_MODE_P2P_GO ? 4171 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 4172 0, 0); 4173 } else if (response_done) { 4174 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4175 } 4176 4177 if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4178 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, 4179 ETH_ALEN); 4180 wpa_s->p2ps_method_config_any = 1; 4181 } 4182 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) { 4183 os_memcpy(go_ifname, go_wpa_s->ifname, 4184 sizeof(go_ifname)); 4185 4186 if (is_zero_ether_addr(grp_mac)) { 4187 wpa_dbg(go_wpa_s, MSG_DEBUG, 4188 "P2P: Setting PIN-1 for ANY"); 4189 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL, 4190 "12345670", NULL, 0, 4191 0); 4192 } else { 4193 wpa_dbg(go_wpa_s, MSG_DEBUG, 4194 "P2P: Setting PIN-1 for " MACSTR, 4195 MAC2STR(grp_mac)); 4196 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac, 4197 "12345670", NULL, 0, 4198 0); 4199 } 4200 4201 os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN); 4202 wpa_s->p2ps_method_config_any = 1; 4203 } 4204 4205 wpa_msg_global(wpa_s, MSG_INFO, 4206 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4207 " status=%d conncap=%x" 4208 " adv_id=%x adv_mac=" MACSTR 4209 " session=%x mac=" MACSTR 4210 " dev_passwd_id=%d go=%s%s", 4211 MAC2STR(dev), status, conncap, 4212 adv_id, MAC2STR(adv_mac), 4213 ses_id, MAC2STR(ses_mac), 4214 passwd_id, go_ifname, feat_cap_str); 4215 return; 4216 } 4217 4218 if (go_wpa_s && !p2p_group_go_member_count(wpa_s)) 4219 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname); 4220 4221 if (persistent_go && !persistent_go->num_p2p_clients) { 4222 /* remove empty persistent GO */ 4223 wpa_config_remove_network(wpa_s->conf, persistent_go->id); 4224 } 4225 4226 if (conncap == P2PS_SETUP_CLIENT) { 4227 char ssid_hex[32 * 2 + 1]; 4228 4229 if (group_ssid) 4230 wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex), 4231 group_ssid, group_ssid_len); 4232 else 4233 ssid_hex[0] = '\0'; 4234 wpa_msg_global(wpa_s, MSG_INFO, 4235 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4236 " status=%d conncap=%x" 4237 " adv_id=%x adv_mac=" MACSTR 4238 " session=%x mac=" MACSTR 4239 " dev_passwd_id=%d join=" MACSTR "%s%s%s", 4240 MAC2STR(dev), status, conncap, 4241 adv_id, MAC2STR(adv_mac), 4242 ses_id, MAC2STR(ses_mac), 4243 passwd_id, MAC2STR(grp_mac), feat_cap_str, 4244 group_ssid ? " group_ssid=" : "", ssid_hex); 4245 } else { 4246 wpa_msg_global(wpa_s, MSG_INFO, 4247 P2P_EVENT_P2PS_PROVISION_DONE MACSTR 4248 " status=%d conncap=%x" 4249 " adv_id=%x adv_mac=" MACSTR 4250 " session=%x mac=" MACSTR 4251 " dev_passwd_id=%d%s", 4252 MAC2STR(dev), status, conncap, 4253 adv_id, MAC2STR(adv_mac), 4254 ses_id, MAC2STR(ses_mac), 4255 passwd_id, feat_cap_str); 4256 } 4257 } 4258 4259 4260 static int _wpas_p2p_in_progress(void *ctx) 4261 { 4262 struct wpa_supplicant *wpa_s = ctx; 4263 return wpas_p2p_in_progress(wpa_s); 4264 } 4265 4266 4267 static int wpas_prov_disc_resp_cb(void *ctx) 4268 { 4269 struct wpa_supplicant *wpa_s = ctx; 4270 struct wpa_ssid *persistent_go; 4271 unsigned int freq; 4272 4273 if (!wpa_s->global->pending_p2ps_group) 4274 return 0; 4275 4276 freq = wpa_s->global->pending_p2ps_group_freq; 4277 wpa_s->global->pending_p2ps_group_freq = 0; 4278 wpa_s->global->pending_p2ps_group = 0; 4279 4280 if (wpas_p2p_get_go_group(wpa_s)) 4281 return 0; 4282 persistent_go = wpas_p2p_get_persistent_go(wpa_s); 4283 4284 if (persistent_go) { 4285 wpas_p2p_group_add_persistent( 4286 wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL, 4287 persistent_go->mode == WPAS_MODE_P2P_GO ? 4288 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0); 4289 } else { 4290 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0); 4291 } 4292 4293 return 1; 4294 } 4295 4296 4297 static int wpas_p2p_get_pref_freq_list(void *ctx, int go, 4298 unsigned int *len, 4299 unsigned int *freq_list) 4300 { 4301 struct wpa_supplicant *wpa_s = ctx; 4302 4303 return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO : 4304 WPA_IF_P2P_CLIENT, len, freq_list); 4305 } 4306 4307 4308 /** 4309 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 4310 * @global: Pointer to global data from wpa_supplicant_init() 4311 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4312 * Returns: 0 on success, -1 on failure 4313 */ 4314 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 4315 { 4316 struct p2p_config p2p; 4317 int i; 4318 4319 if (wpa_s->conf->p2p_disabled) 4320 return 0; 4321 4322 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4323 return 0; 4324 4325 if (global->p2p) 4326 return 0; 4327 4328 os_memset(&p2p, 0, sizeof(p2p)); 4329 p2p.cb_ctx = wpa_s; 4330 p2p.debug_print = wpas_p2p_debug_print; 4331 p2p.p2p_scan = wpas_p2p_scan; 4332 p2p.send_action = wpas_send_action; 4333 p2p.send_action_done = wpas_send_action_done; 4334 p2p.go_neg_completed = wpas_go_neg_completed; 4335 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 4336 p2p.dev_found = wpas_dev_found; 4337 p2p.dev_lost = wpas_dev_lost; 4338 p2p.find_stopped = wpas_find_stopped; 4339 p2p.start_listen = wpas_start_listen; 4340 p2p.stop_listen = wpas_stop_listen; 4341 p2p.send_probe_resp = wpas_send_probe_resp; 4342 p2p.sd_request = wpas_sd_request; 4343 p2p.sd_response = wpas_sd_response; 4344 p2p.prov_disc_req = wpas_prov_disc_req; 4345 p2p.prov_disc_resp = wpas_prov_disc_resp; 4346 p2p.prov_disc_fail = wpas_prov_disc_fail; 4347 p2p.invitation_process = wpas_invitation_process; 4348 p2p.invitation_received = wpas_invitation_received; 4349 p2p.invitation_result = wpas_invitation_result; 4350 p2p.get_noa = wpas_get_noa; 4351 p2p.go_connected = wpas_go_connected; 4352 p2p.presence_resp = wpas_presence_resp; 4353 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 4354 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 4355 p2p.get_persistent_group = wpas_get_persistent_group; 4356 p2p.get_go_info = wpas_get_go_info; 4357 p2p.remove_stale_groups = wpas_remove_stale_groups; 4358 p2p.p2ps_prov_complete = wpas_p2ps_prov_complete; 4359 p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb; 4360 p2p.p2ps_group_capability = p2ps_group_capability; 4361 p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list; 4362 4363 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 4364 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 4365 p2p.dev_name = wpa_s->conf->device_name; 4366 p2p.manufacturer = wpa_s->conf->manufacturer; 4367 p2p.model_name = wpa_s->conf->model_name; 4368 p2p.model_number = wpa_s->conf->model_number; 4369 p2p.serial_number = wpa_s->conf->serial_number; 4370 if (wpa_s->wps) { 4371 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 4372 p2p.config_methods = wpa_s->wps->config_methods; 4373 } 4374 4375 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 4376 wpa_printf(MSG_ERROR, 4377 "P2P: Failed to configure supported channel list"); 4378 return -1; 4379 } 4380 4381 if (wpa_s->conf->p2p_listen_reg_class && 4382 wpa_s->conf->p2p_listen_channel) { 4383 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 4384 p2p.channel = wpa_s->conf->p2p_listen_channel; 4385 p2p.channel_forced = 1; 4386 } else { 4387 /* 4388 * Pick one of the social channels randomly as the listen 4389 * channel. 4390 */ 4391 if (p2p_config_get_random_social(&p2p, &p2p.reg_class, 4392 &p2p.channel) != 0) { 4393 wpa_printf(MSG_INFO, 4394 "P2P: No social channels supported by the driver - do not enable P2P"); 4395 return 0; 4396 } 4397 p2p.channel_forced = 0; 4398 } 4399 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d", 4400 p2p.reg_class, p2p.channel); 4401 4402 if (wpa_s->conf->p2p_oper_reg_class && 4403 wpa_s->conf->p2p_oper_channel) { 4404 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4405 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 4406 p2p.cfg_op_channel = 1; 4407 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 4408 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4409 4410 } else { 4411 /* 4412 * Use random operation channel from 2.4 GHz band social 4413 * channels (1, 6, 11) or band 60 GHz social channel (2) if no 4414 * other preference is indicated. 4415 */ 4416 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class, 4417 &p2p.op_channel) != 0) { 4418 wpa_printf(MSG_ERROR, 4419 "P2P: Failed to select random social channel as operation channel"); 4420 return -1; 4421 } 4422 p2p.cfg_op_channel = 0; 4423 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 4424 "%d:%d", p2p.op_reg_class, p2p.op_channel); 4425 } 4426 4427 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 4428 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 4429 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 4430 } 4431 4432 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4433 os_memcpy(p2p.country, wpa_s->conf->country, 2); 4434 p2p.country[2] = 0x04; 4435 } else 4436 os_memcpy(p2p.country, "XX\x04", 3); 4437 4438 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 4439 WPS_DEV_TYPE_LEN); 4440 4441 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 4442 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 4443 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 4444 4445 p2p.concurrent_operations = !!(wpa_s->drv_flags & 4446 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 4447 4448 p2p.max_peers = 100; 4449 4450 if (wpa_s->conf->p2p_ssid_postfix) { 4451 p2p.ssid_postfix_len = 4452 os_strlen(wpa_s->conf->p2p_ssid_postfix); 4453 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 4454 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 4455 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 4456 p2p.ssid_postfix_len); 4457 } 4458 4459 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 4460 4461 p2p.max_listen = wpa_s->max_remain_on_chan; 4462 4463 if (wpa_s->conf->p2p_passphrase_len >= 8 && 4464 wpa_s->conf->p2p_passphrase_len <= 63) 4465 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len; 4466 else 4467 p2p.passphrase_len = 8; 4468 4469 global->p2p = p2p_init(&p2p); 4470 if (global->p2p == NULL) 4471 return -1; 4472 global->p2p_init_wpa_s = wpa_s; 4473 4474 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4475 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4476 continue; 4477 p2p_add_wps_vendor_extension( 4478 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 4479 } 4480 4481 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 4482 4483 return 0; 4484 } 4485 4486 4487 /** 4488 * wpas_p2p_deinit - Deinitialize per-interface P2P data 4489 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4490 * 4491 * This function deinitialize per-interface P2P data. 4492 */ 4493 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 4494 { 4495 if (wpa_s->driver && wpa_s->drv_priv) 4496 wpa_drv_probe_req_report(wpa_s, 0); 4497 4498 if (wpa_s->go_params) { 4499 /* Clear any stored provisioning info */ 4500 p2p_clear_provisioning_info( 4501 wpa_s->global->p2p, 4502 wpa_s->go_params->peer_device_addr); 4503 } 4504 4505 os_free(wpa_s->go_params); 4506 wpa_s->go_params = NULL; 4507 eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL); 4508 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4509 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4510 wpa_s->p2p_long_listen = 0; 4511 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4512 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4513 wpas_p2p_remove_pending_group_interface(wpa_s); 4514 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 4515 wpas_p2p_listen_work_done(wpa_s); 4516 if (wpa_s->p2p_send_action_work) { 4517 os_free(wpa_s->p2p_send_action_work->ctx); 4518 radio_work_done(wpa_s->p2p_send_action_work); 4519 wpa_s->p2p_send_action_work = NULL; 4520 } 4521 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 4522 4523 wpabuf_free(wpa_s->p2p_oob_dev_pw); 4524 wpa_s->p2p_oob_dev_pw = NULL; 4525 4526 os_free(wpa_s->p2p_group_common_freqs); 4527 wpa_s->p2p_group_common_freqs = NULL; 4528 wpa_s->p2p_group_common_freqs_num = 0; 4529 4530 /* TODO: remove group interface from the driver if this wpa_s instance 4531 * is on top of a P2P group interface */ 4532 } 4533 4534 4535 /** 4536 * wpas_p2p_deinit_global - Deinitialize global P2P module 4537 * @global: Pointer to global data from wpa_supplicant_init() 4538 * 4539 * This function deinitializes the global (per device) P2P module. 4540 */ 4541 static void wpas_p2p_deinit_global(struct wpa_global *global) 4542 { 4543 struct wpa_supplicant *wpa_s, *tmp; 4544 4545 wpa_s = global->ifaces; 4546 4547 wpas_p2p_service_flush(global->p2p_init_wpa_s); 4548 4549 /* Remove remaining P2P group interfaces */ 4550 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 4551 wpa_s = wpa_s->next; 4552 while (wpa_s) { 4553 tmp = global->ifaces; 4554 while (tmp && 4555 (tmp == wpa_s || 4556 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 4557 tmp = tmp->next; 4558 } 4559 if (tmp == NULL) 4560 break; 4561 /* Disconnect from the P2P group and deinit the interface */ 4562 wpas_p2p_disconnect(tmp); 4563 } 4564 4565 /* 4566 * Deinit GO data on any possibly remaining interface (if main 4567 * interface is used as GO). 4568 */ 4569 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4570 if (wpa_s->ap_iface) 4571 wpas_p2p_group_deinit(wpa_s); 4572 } 4573 4574 p2p_deinit(global->p2p); 4575 global->p2p = NULL; 4576 global->p2p_init_wpa_s = NULL; 4577 } 4578 4579 4580 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4581 { 4582 if (wpa_s->conf->p2p_no_group_iface) 4583 return 0; /* separate interface disabled per configuration */ 4584 if (wpa_s->drv_flags & 4585 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4586 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4587 return 1; /* P2P group requires a new interface in every case 4588 */ 4589 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4590 return 0; /* driver does not support concurrent operations */ 4591 if (wpa_s->global->ifaces->next) 4592 return 1; /* more that one interface already in use */ 4593 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4594 return 1; /* this interface is already in use */ 4595 return 0; 4596 } 4597 4598 4599 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4600 const u8 *peer_addr, 4601 enum p2p_wps_method wps_method, 4602 int go_intent, const u8 *own_interface_addr, 4603 unsigned int force_freq, int persistent_group, 4604 struct wpa_ssid *ssid, unsigned int pref_freq) 4605 { 4606 if (persistent_group && wpa_s->conf->persistent_reconnect) 4607 persistent_group = 2; 4608 4609 /* 4610 * Increase GO config timeout if HT40 is used since it takes some time 4611 * to scan channels for coex purposes before the BSS can be started. 4612 */ 4613 p2p_set_config_timeout(wpa_s->global->p2p, 4614 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4615 4616 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4617 go_intent, own_interface_addr, force_freq, 4618 persistent_group, ssid ? ssid->ssid : NULL, 4619 ssid ? ssid->ssid_len : 0, 4620 wpa_s->p2p_pd_before_go_neg, pref_freq, 4621 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4622 0); 4623 } 4624 4625 4626 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4627 const u8 *peer_addr, 4628 enum p2p_wps_method wps_method, 4629 int go_intent, const u8 *own_interface_addr, 4630 unsigned int force_freq, int persistent_group, 4631 struct wpa_ssid *ssid, unsigned int pref_freq) 4632 { 4633 if (persistent_group && wpa_s->conf->persistent_reconnect) 4634 persistent_group = 2; 4635 4636 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4637 go_intent, own_interface_addr, force_freq, 4638 persistent_group, ssid ? ssid->ssid : NULL, 4639 ssid ? ssid->ssid_len : 0, pref_freq, 4640 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4641 0); 4642 } 4643 4644 4645 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4646 { 4647 wpa_s->p2p_join_scan_count++; 4648 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4649 wpa_s->p2p_join_scan_count); 4650 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4651 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4652 " for join operationg - stop join attempt", 4653 MAC2STR(wpa_s->pending_join_iface_addr)); 4654 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4655 if (wpa_s->p2p_auto_pd) { 4656 wpa_s->p2p_auto_pd = 0; 4657 wpa_msg_global(wpa_s, MSG_INFO, 4658 P2P_EVENT_PROV_DISC_FAILURE 4659 " p2p_dev_addr=" MACSTR " status=N/A", 4660 MAC2STR(wpa_s->pending_join_dev_addr)); 4661 return; 4662 } 4663 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4664 P2P_EVENT_GROUP_FORMATION_FAILURE); 4665 wpas_notify_p2p_group_formation_failure(wpa_s, ""); 4666 } 4667 } 4668 4669 4670 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4671 { 4672 int res; 4673 unsigned int num, i; 4674 struct wpa_used_freq_data *freqs; 4675 4676 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4677 /* Multiple channels are supported and not all are in use */ 4678 return 0; 4679 } 4680 4681 freqs = os_calloc(wpa_s->num_multichan_concurrent, 4682 sizeof(struct wpa_used_freq_data)); 4683 if (!freqs) 4684 return 1; 4685 4686 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4687 wpa_s->num_multichan_concurrent); 4688 4689 for (i = 0; i < num; i++) { 4690 if (freqs[i].freq == freq) { 4691 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4692 freq); 4693 res = 0; 4694 goto exit_free; 4695 } 4696 } 4697 4698 wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies"); 4699 res = 1; 4700 4701 exit_free: 4702 os_free(freqs); 4703 return res; 4704 } 4705 4706 4707 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4708 const u8 *peer_dev_addr) 4709 { 4710 struct wpa_bss *bss; 4711 int updated; 4712 4713 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4714 if (bss == NULL) 4715 return -1; 4716 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4717 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4718 "last scan"); 4719 return 0; 4720 } 4721 4722 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4723 &bss->last_update); 4724 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4725 "%ld.%06ld (%supdated in last scan)", 4726 bss->last_update.sec, bss->last_update.usec, 4727 updated ? "": "not "); 4728 4729 return updated; 4730 } 4731 4732 4733 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4734 struct wpa_scan_results *scan_res) 4735 { 4736 struct wpa_bss *bss = NULL; 4737 int freq; 4738 u8 iface_addr[ETH_ALEN]; 4739 4740 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4741 4742 if (wpa_s->global->p2p_disabled) 4743 return; 4744 4745 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4746 scan_res ? (int) scan_res->num : -1, 4747 wpa_s->p2p_auto_join ? "auto_" : ""); 4748 4749 if (scan_res) 4750 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4751 4752 if (wpa_s->p2p_auto_pd) { 4753 int join = wpas_p2p_peer_go(wpa_s, 4754 wpa_s->pending_join_dev_addr); 4755 if (join == 0 && 4756 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4757 wpa_s->auto_pd_scan_retry++; 4758 bss = wpa_bss_get_bssid_latest( 4759 wpa_s, wpa_s->pending_join_dev_addr); 4760 if (bss) { 4761 freq = bss->freq; 4762 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4763 "the peer " MACSTR " at %d MHz", 4764 wpa_s->auto_pd_scan_retry, 4765 MAC2STR(wpa_s-> 4766 pending_join_dev_addr), 4767 freq); 4768 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4769 return; 4770 } 4771 } 4772 4773 if (join < 0) 4774 join = 0; 4775 4776 wpa_s->p2p_auto_pd = 0; 4777 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4778 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4779 MAC2STR(wpa_s->pending_join_dev_addr), join); 4780 if (p2p_prov_disc_req(wpa_s->global->p2p, 4781 wpa_s->pending_join_dev_addr, NULL, 4782 wpa_s->pending_pd_config_methods, join, 4783 0, wpa_s->user_initiated_pd) < 0) { 4784 wpa_s->p2p_auto_pd = 0; 4785 wpa_msg_global(wpa_s, MSG_INFO, 4786 P2P_EVENT_PROV_DISC_FAILURE 4787 " p2p_dev_addr=" MACSTR " status=N/A", 4788 MAC2STR(wpa_s->pending_join_dev_addr)); 4789 } 4790 return; 4791 } 4792 4793 if (wpa_s->p2p_auto_join) { 4794 int join = wpas_p2p_peer_go(wpa_s, 4795 wpa_s->pending_join_dev_addr); 4796 if (join < 0) { 4797 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4798 "running a GO -> use GO Negotiation"); 4799 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4800 P2P_EVENT_FALLBACK_TO_GO_NEG 4801 "reason=peer-not-running-GO"); 4802 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4803 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4804 wpa_s->p2p_persistent_group, 0, 0, 0, 4805 wpa_s->p2p_go_intent, 4806 wpa_s->p2p_connect_freq, 4807 wpa_s->p2p_go_vht_center_freq2, 4808 wpa_s->p2p_persistent_id, 4809 wpa_s->p2p_pd_before_go_neg, 4810 wpa_s->p2p_go_ht40, 4811 wpa_s->p2p_go_vht, 4812 wpa_s->p2p_go_max_oper_chwidth, 4813 NULL, 0); 4814 return; 4815 } 4816 4817 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4818 "try to join the group", join ? "" : 4819 " in older scan"); 4820 if (!join) { 4821 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4822 P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED); 4823 wpa_s->p2p_fallback_to_go_neg = 1; 4824 } 4825 } 4826 4827 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4828 wpa_s->pending_join_iface_addr); 4829 if (freq < 0 && 4830 p2p_get_interface_addr(wpa_s->global->p2p, 4831 wpa_s->pending_join_dev_addr, 4832 iface_addr) == 0 && 4833 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0 4834 && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) { 4835 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4836 "address for join from " MACSTR " to " MACSTR 4837 " based on newly discovered P2P peer entry", 4838 MAC2STR(wpa_s->pending_join_iface_addr), 4839 MAC2STR(iface_addr)); 4840 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4841 ETH_ALEN); 4842 4843 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4844 wpa_s->pending_join_iface_addr); 4845 } 4846 if (freq >= 0) { 4847 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4848 "from P2P peer table: %d MHz", freq); 4849 } 4850 if (wpa_s->p2p_join_ssid_len) { 4851 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4852 MACSTR " and SSID %s", 4853 MAC2STR(wpa_s->pending_join_iface_addr), 4854 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4855 wpa_s->p2p_join_ssid_len)); 4856 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4857 wpa_s->p2p_join_ssid, 4858 wpa_s->p2p_join_ssid_len); 4859 } else if (!bss) { 4860 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4861 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4862 bss = wpa_bss_get_bssid_latest(wpa_s, 4863 wpa_s->pending_join_iface_addr); 4864 } 4865 if (bss) { 4866 u8 dev_addr[ETH_ALEN]; 4867 4868 freq = bss->freq; 4869 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4870 "from BSS table: %d MHz (SSID %s)", freq, 4871 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4872 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len, 4873 dev_addr) == 0 && 4874 os_memcmp(wpa_s->pending_join_dev_addr, 4875 wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 && 4876 os_memcmp(dev_addr, wpa_s->pending_join_dev_addr, 4877 ETH_ALEN) != 0) { 4878 wpa_printf(MSG_DEBUG, 4879 "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")", 4880 MAC2STR(dev_addr), 4881 MAC2STR(wpa_s->pending_join_dev_addr)); 4882 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, 4883 ETH_ALEN); 4884 } 4885 } 4886 if (freq > 0) { 4887 u16 method; 4888 4889 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 4890 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 4891 P2P_EVENT_GROUP_FORMATION_FAILURE 4892 "reason=FREQ_CONFLICT"); 4893 wpas_notify_p2p_group_formation_failure( 4894 wpa_s, "FREQ_CONFLICT"); 4895 return; 4896 } 4897 4898 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 4899 "prior to joining an existing group (GO " MACSTR 4900 " freq=%u MHz)", 4901 MAC2STR(wpa_s->pending_join_dev_addr), freq); 4902 wpa_s->pending_pd_before_join = 1; 4903 4904 switch (wpa_s->pending_join_wps_method) { 4905 case WPS_PIN_DISPLAY: 4906 method = WPS_CONFIG_KEYPAD; 4907 break; 4908 case WPS_PIN_KEYPAD: 4909 method = WPS_CONFIG_DISPLAY; 4910 break; 4911 case WPS_PBC: 4912 method = WPS_CONFIG_PUSHBUTTON; 4913 break; 4914 case WPS_P2PS: 4915 method = WPS_CONFIG_P2PS; 4916 break; 4917 default: 4918 method = 0; 4919 break; 4920 } 4921 4922 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 4923 wpa_s->pending_join_dev_addr) == 4924 method)) { 4925 /* 4926 * We have already performed provision discovery for 4927 * joining the group. Proceed directly to join 4928 * operation without duplicated provision discovery. */ 4929 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 4930 "with " MACSTR " already done - proceed to " 4931 "join", 4932 MAC2STR(wpa_s->pending_join_dev_addr)); 4933 wpa_s->pending_pd_before_join = 0; 4934 goto start; 4935 } 4936 4937 if (p2p_prov_disc_req(wpa_s->global->p2p, 4938 wpa_s->pending_join_dev_addr, 4939 NULL, method, 1, 4940 freq, wpa_s->user_initiated_pd) < 0) { 4941 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 4942 "Discovery Request before joining an " 4943 "existing group"); 4944 wpa_s->pending_pd_before_join = 0; 4945 goto start; 4946 } 4947 return; 4948 } 4949 4950 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 4951 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4952 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4953 wpas_p2p_check_join_scan_limit(wpa_s); 4954 return; 4955 4956 start: 4957 /* Start join operation immediately */ 4958 wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid, 4959 wpa_s->p2p_join_ssid_len); 4960 } 4961 4962 4963 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 4964 const u8 *ssid, size_t ssid_len) 4965 { 4966 int ret; 4967 struct wpa_driver_scan_params params; 4968 struct wpabuf *wps_ie, *ies; 4969 size_t ielen; 4970 int freqs[2] = { 0, 0 }; 4971 unsigned int bands; 4972 4973 os_memset(¶ms, 0, sizeof(params)); 4974 4975 /* P2P Wildcard SSID */ 4976 params.num_ssids = 1; 4977 if (ssid && ssid_len) { 4978 params.ssids[0].ssid = ssid; 4979 params.ssids[0].ssid_len = ssid_len; 4980 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 4981 wpa_s->p2p_join_ssid_len = ssid_len; 4982 } else { 4983 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 4984 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 4985 wpa_s->p2p_join_ssid_len = 0; 4986 } 4987 4988 wpa_s->wps->dev.p2p = 1; 4989 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 4990 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 4991 NULL); 4992 if (wps_ie == NULL) { 4993 wpas_p2p_scan_res_join(wpa_s, NULL); 4994 return; 4995 } 4996 4997 if (!freq) { 4998 int oper_freq; 4999 /* 5000 * If freq is not provided, check the operating freq of the GO 5001 * and use a single channel scan on if possible. 5002 */ 5003 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 5004 wpa_s->pending_join_iface_addr); 5005 if (oper_freq > 0) 5006 freq = oper_freq; 5007 } 5008 if (freq > 0) { 5009 freqs[0] = freq; 5010 params.freqs = freqs; 5011 } 5012 5013 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 5014 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 5015 if (ies == NULL) { 5016 wpabuf_free(wps_ie); 5017 wpas_p2p_scan_res_join(wpa_s, NULL); 5018 return; 5019 } 5020 wpabuf_put_buf(ies, wps_ie); 5021 wpabuf_free(wps_ie); 5022 5023 bands = wpas_get_bands(wpa_s, freqs); 5024 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 5025 5026 params.p2p_probe = 1; 5027 params.extra_ies = wpabuf_head(ies); 5028 params.extra_ies_len = wpabuf_len(ies); 5029 5030 if (wpa_s->clear_driver_scan_cache) { 5031 wpa_printf(MSG_DEBUG, 5032 "Request driver to clear scan cache due to local BSS flush"); 5033 params.only_new_results = 1; 5034 } 5035 5036 /* 5037 * Run a scan to update BSS table and start Provision Discovery once 5038 * the new scan results become available. 5039 */ 5040 ret = wpa_drv_scan(wpa_s, ¶ms); 5041 if (!ret) { 5042 os_get_reltime(&wpa_s->scan_trigger_time); 5043 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 5044 wpa_s->own_scan_requested = 1; 5045 wpa_s->clear_driver_scan_cache = 0; 5046 } 5047 5048 wpabuf_free(ies); 5049 5050 if (ret) { 5051 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 5052 "try again later"); 5053 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5054 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 5055 wpas_p2p_check_join_scan_limit(wpa_s); 5056 } 5057 } 5058 5059 5060 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 5061 { 5062 struct wpa_supplicant *wpa_s = eloop_ctx; 5063 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 5064 } 5065 5066 5067 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 5068 const u8 *dev_addr, enum p2p_wps_method wps_method, 5069 int auto_join, int op_freq, 5070 const u8 *ssid, size_t ssid_len) 5071 { 5072 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 5073 MACSTR " dev " MACSTR " op_freq=%d)%s", 5074 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 5075 auto_join ? " (auto_join)" : ""); 5076 if (ssid && ssid_len) { 5077 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 5078 wpa_ssid_txt(ssid, ssid_len)); 5079 } 5080 5081 wpa_s->p2p_auto_pd = 0; 5082 wpa_s->p2p_auto_join = !!auto_join; 5083 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 5084 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 5085 wpa_s->pending_join_wps_method = wps_method; 5086 5087 /* Make sure we are not running find during connection establishment */ 5088 wpas_p2p_stop_find(wpa_s); 5089 5090 wpa_s->p2p_join_scan_count = 0; 5091 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 5092 return 0; 5093 } 5094 5095 5096 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 5097 const u8 *ssid, size_t ssid_len) 5098 { 5099 struct wpa_supplicant *group; 5100 struct p2p_go_neg_results res; 5101 struct wpa_bss *bss; 5102 5103 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 5104 if (group == NULL) 5105 return -1; 5106 if (group != wpa_s) { 5107 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 5108 sizeof(group->p2p_pin)); 5109 group->p2p_wps_method = wpa_s->p2p_wps_method; 5110 } else { 5111 /* 5112 * Need to mark the current interface for p2p_group_formation 5113 * when a separate group interface is not used. This is needed 5114 * to allow p2p_cancel stop a pending p2p_connect-join. 5115 * wpas_p2p_init_group_interface() addresses this for the case 5116 * where a separate group interface is used. 5117 */ 5118 wpa_s->global->p2p_group_formation = wpa_s; 5119 } 5120 5121 group->p2p_in_provisioning = 1; 5122 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 5123 5124 os_memset(&res, 0, sizeof(res)); 5125 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 5126 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 5127 ETH_ALEN); 5128 res.wps_method = wpa_s->pending_join_wps_method; 5129 if (freq && ssid && ssid_len) { 5130 res.freq = freq; 5131 res.ssid_len = ssid_len; 5132 os_memcpy(res.ssid, ssid, ssid_len); 5133 } else { 5134 if (ssid && ssid_len) { 5135 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 5136 ssid, ssid_len); 5137 } else { 5138 bss = wpa_bss_get_bssid_latest( 5139 wpa_s, wpa_s->pending_join_iface_addr); 5140 } 5141 if (bss) { 5142 res.freq = bss->freq; 5143 res.ssid_len = bss->ssid_len; 5144 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 5145 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 5146 bss->freq, 5147 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 5148 } else if (ssid && ssid_len) { 5149 res.ssid_len = ssid_len; 5150 os_memcpy(res.ssid, ssid, ssid_len); 5151 wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)", 5152 wpa_ssid_txt(ssid, ssid_len)); 5153 } 5154 } 5155 5156 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 5157 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 5158 "starting client"); 5159 wpa_drv_cancel_remain_on_channel(wpa_s); 5160 wpa_s->off_channel_freq = 0; 5161 wpa_s->roc_waiting_drv_freq = 0; 5162 } 5163 wpas_start_wps_enrollee(group, &res); 5164 5165 /* 5166 * Allow a longer timeout for join-a-running-group than normal 15 5167 * second group formation timeout since the GO may not have authorized 5168 * our connection yet. 5169 */ 5170 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 5171 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 5172 wpa_s, NULL); 5173 5174 return 0; 5175 } 5176 5177 5178 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 5179 int *force_freq, int *pref_freq, int go, 5180 unsigned int *pref_freq_list, 5181 unsigned int *num_pref_freq) 5182 { 5183 struct wpa_used_freq_data *freqs; 5184 int res, best_freq, num_unused; 5185 unsigned int freq_in_use = 0, num, i, max_pref_freq; 5186 5187 max_pref_freq = *num_pref_freq; 5188 *num_pref_freq = 0; 5189 5190 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5191 sizeof(struct wpa_used_freq_data)); 5192 if (!freqs) 5193 return -1; 5194 5195 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5196 wpa_s->num_multichan_concurrent); 5197 5198 /* 5199 * It is possible that the total number of used frequencies is bigger 5200 * than the number of frequencies used for P2P, so get the system wide 5201 * number of unused frequencies. 5202 */ 5203 num_unused = wpas_p2p_num_unused_channels(wpa_s); 5204 5205 wpa_printf(MSG_DEBUG, 5206 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d", 5207 freq, wpa_s->num_multichan_concurrent, num, num_unused); 5208 5209 if (freq > 0) { 5210 int ret; 5211 if (go) 5212 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 5213 else 5214 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 5215 if (!ret) { 5216 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5217 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5218 wpa_s->hw.num_modes)) { 5219 /* 5220 * If freq is a DFS channel and DFS is offloaded 5221 * to the driver, allow P2P GO to use it. 5222 */ 5223 wpa_printf(MSG_DEBUG, 5224 "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver", 5225 freq); 5226 } else { 5227 wpa_printf(MSG_DEBUG, 5228 "P2P: The forced channel (%u MHz) is not supported for P2P uses", 5229 freq); 5230 res = -3; 5231 goto exit_free; 5232 } 5233 } 5234 5235 for (i = 0; i < num; i++) { 5236 if (freqs[i].freq == freq) 5237 freq_in_use = 1; 5238 } 5239 5240 if (num_unused <= 0 && !freq_in_use) { 5241 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 5242 freq); 5243 res = -2; 5244 goto exit_free; 5245 } 5246 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 5247 "requested channel (%u MHz)", freq); 5248 *force_freq = freq; 5249 goto exit_ok; 5250 } 5251 5252 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5253 5254 if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) { 5255 enum wpa_driver_if_type iface_type; 5256 5257 if (go) 5258 iface_type = WPA_IF_P2P_GO; 5259 else 5260 iface_type = WPA_IF_P2P_CLIENT; 5261 5262 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d", 5263 best_freq, go); 5264 5265 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type, 5266 &max_pref_freq, 5267 pref_freq_list); 5268 if (!res && max_pref_freq > 0) { 5269 *num_pref_freq = max_pref_freq; 5270 i = 0; 5271 while (i < *num_pref_freq && 5272 (!p2p_supported_freq(wpa_s->global->p2p, 5273 pref_freq_list[i]) || 5274 wpas_p2p_disallowed_freq(wpa_s->global, 5275 pref_freq_list[i]))) { 5276 wpa_printf(MSG_DEBUG, 5277 "P2P: preferred_freq_list[%d]=%d is disallowed", 5278 i, pref_freq_list[i]); 5279 i++; 5280 } 5281 if (i != *num_pref_freq) { 5282 best_freq = pref_freq_list[i]; 5283 wpa_printf(MSG_DEBUG, 5284 "P2P: Using preferred_freq_list[%d]=%d", 5285 i, best_freq); 5286 } else { 5287 wpa_printf(MSG_DEBUG, 5288 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5289 *num_pref_freq = 0; 5290 } 5291 } else { 5292 wpa_printf(MSG_DEBUG, 5293 "P2P: No preferred frequency list available"); 5294 } 5295 } 5296 5297 /* We have a candidate frequency to use */ 5298 if (best_freq > 0) { 5299 if (*pref_freq == 0 && num_unused > 0) { 5300 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 5301 best_freq); 5302 *pref_freq = best_freq; 5303 } else { 5304 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 5305 best_freq); 5306 *force_freq = best_freq; 5307 } 5308 } else if (num_unused > 0) { 5309 wpa_printf(MSG_DEBUG, 5310 "P2P: Current operating channels are not available for P2P. Try to use another channel"); 5311 *force_freq = 0; 5312 } else { 5313 wpa_printf(MSG_DEBUG, 5314 "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 5315 res = -2; 5316 goto exit_free; 5317 } 5318 5319 exit_ok: 5320 res = 0; 5321 exit_free: 5322 os_free(freqs); 5323 return res; 5324 } 5325 5326 5327 /** 5328 * wpas_p2p_connect - Request P2P Group Formation to be started 5329 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5330 * @peer_addr: Address of the peer P2P Device 5331 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 5332 * @persistent_group: Whether to create a persistent group 5333 * @auto_join: Whether to select join vs. GO Negotiation automatically 5334 * @join: Whether to join an existing group (as a client) instead of starting 5335 * Group Owner negotiation; @peer_addr is BSSID in that case 5336 * @auth: Whether to only authorize the connection instead of doing that and 5337 * initiating Group Owner negotiation 5338 * @go_intent: GO Intent or -1 to use default 5339 * @freq: Frequency for the group or 0 for auto-selection 5340 * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode 5341 * @persistent_id: Persistent group credentials to use for forcing GO 5342 * parameters or -1 to generate new values (SSID/passphrase) 5343 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 5344 * interoperability workaround when initiating group formation 5345 * @ht40: Start GO with 40 MHz channel width 5346 * @vht: Start GO with VHT support 5347 * @vht_chwidth: Channel width supported by GO operating with VHT support 5348 * (VHT_CHANWIDTH_*). 5349 * @group_ssid: Specific Group SSID for join or %NULL if not set 5350 * @group_ssid_len: Length of @group_ssid in octets 5351 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 5352 * failure, -2 on failure due to channel not currently available, 5353 * -3 if forced channel is not supported 5354 */ 5355 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5356 const char *pin, enum p2p_wps_method wps_method, 5357 int persistent_group, int auto_join, int join, int auth, 5358 int go_intent, int freq, unsigned int vht_center_freq2, 5359 int persistent_id, int pd, int ht40, int vht, 5360 unsigned int vht_chwidth, const u8 *group_ssid, 5361 size_t group_ssid_len) 5362 { 5363 int force_freq = 0, pref_freq = 0; 5364 int ret = 0, res; 5365 enum wpa_driver_if_type iftype; 5366 const u8 *if_addr; 5367 struct wpa_ssid *ssid = NULL; 5368 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 5369 5370 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5371 return -1; 5372 5373 if (persistent_id >= 0) { 5374 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 5375 if (ssid == NULL || ssid->disabled != 2 || 5376 ssid->mode != WPAS_MODE_P2P_GO) 5377 return -1; 5378 } 5379 5380 os_free(wpa_s->global->add_psk); 5381 wpa_s->global->add_psk = NULL; 5382 5383 wpa_s->global->p2p_fail_on_wps_complete = 0; 5384 wpa_s->global->pending_p2ps_group = 0; 5385 wpa_s->global->pending_p2ps_group_freq = 0; 5386 wpa_s->p2ps_method_config_any = 0; 5387 5388 if (go_intent < 0) 5389 go_intent = wpa_s->conf->p2p_go_intent; 5390 5391 if (!auth) 5392 wpa_s->p2p_long_listen = 0; 5393 5394 wpa_s->p2p_wps_method = wps_method; 5395 wpa_s->p2p_persistent_group = !!persistent_group; 5396 wpa_s->p2p_persistent_id = persistent_id; 5397 wpa_s->p2p_go_intent = go_intent; 5398 wpa_s->p2p_connect_freq = freq; 5399 wpa_s->p2p_fallback_to_go_neg = 0; 5400 wpa_s->p2p_pd_before_go_neg = !!pd; 5401 wpa_s->p2p_go_ht40 = !!ht40; 5402 wpa_s->p2p_go_vht = !!vht; 5403 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 5404 wpa_s->p2p_go_max_oper_chwidth = vht_chwidth; 5405 5406 if (pin) 5407 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 5408 else if (wps_method == WPS_PIN_DISPLAY) { 5409 if (wps_generate_pin((unsigned int *) &ret) < 0) 5410 return -1; 5411 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), 5412 "%08d", ret); 5413 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res)) 5414 wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0'; 5415 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 5416 wpa_s->p2p_pin); 5417 } else if (wps_method == WPS_P2PS) { 5418 /* Force the P2Ps default PIN to be used */ 5419 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin)); 5420 } else 5421 wpa_s->p2p_pin[0] = '\0'; 5422 5423 if (join || auto_join) { 5424 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 5425 if (auth) { 5426 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 5427 "connect a running group from " MACSTR, 5428 MAC2STR(peer_addr)); 5429 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5430 return ret; 5431 } 5432 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 5433 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 5434 iface_addr) < 0) { 5435 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 5436 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 5437 dev_addr); 5438 } 5439 if (auto_join) { 5440 os_get_reltime(&wpa_s->p2p_auto_started); 5441 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 5442 "%ld.%06ld", 5443 wpa_s->p2p_auto_started.sec, 5444 wpa_s->p2p_auto_started.usec); 5445 } 5446 wpa_s->user_initiated_pd = 1; 5447 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 5448 auto_join, freq, 5449 group_ssid, group_ssid_len) < 0) 5450 return -1; 5451 return ret; 5452 } 5453 5454 size = P2P_MAX_PREF_CHANNELS; 5455 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5456 go_intent == 15, pref_freq_list, &size); 5457 if (res) 5458 return res; 5459 wpas_p2p_set_own_freq_preference(wpa_s, 5460 force_freq ? force_freq : pref_freq); 5461 5462 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 5463 5464 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 5465 5466 if (wpa_s->create_p2p_iface) { 5467 /* Prepare to add a new interface for the group */ 5468 iftype = WPA_IF_P2P_GROUP; 5469 if (go_intent == 15) 5470 iftype = WPA_IF_P2P_GO; 5471 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 5472 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 5473 "interface for the group"); 5474 return -1; 5475 } 5476 5477 if_addr = wpa_s->pending_interface_addr; 5478 } else { 5479 if (wpa_s->p2p_mgmt) 5480 if_addr = wpa_s->parent->own_addr; 5481 else 5482 if_addr = wpa_s->own_addr; 5483 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 5484 } 5485 5486 if (auth) { 5487 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 5488 go_intent, if_addr, 5489 force_freq, persistent_group, ssid, 5490 pref_freq) < 0) 5491 return -1; 5492 return ret; 5493 } 5494 5495 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 5496 go_intent, if_addr, force_freq, 5497 persistent_group, ssid, pref_freq) < 0) { 5498 if (wpa_s->create_p2p_iface) 5499 wpas_p2p_remove_pending_group_interface(wpa_s); 5500 return -1; 5501 } 5502 return ret; 5503 } 5504 5505 5506 /** 5507 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 5508 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5509 * @freq: Frequency of the channel in MHz 5510 * @duration: Duration of the stay on the channel in milliseconds 5511 * 5512 * This callback is called when the driver indicates that it has started the 5513 * requested remain-on-channel duration. 5514 */ 5515 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5516 unsigned int freq, unsigned int duration) 5517 { 5518 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5519 return; 5520 wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)", 5521 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5522 wpa_s->roc_waiting_drv_freq, freq, duration); 5523 if (wpa_s->off_channel_freq && 5524 wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 5525 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 5526 wpa_s->pending_listen_duration); 5527 wpa_s->pending_listen_freq = 0; 5528 } else { 5529 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 5530 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 5531 freq, duration); 5532 } 5533 } 5534 5535 5536 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout) 5537 { 5538 /* Limit maximum Listen state time based on driver limitation. */ 5539 if (timeout > wpa_s->max_remain_on_chan) 5540 timeout = wpa_s->max_remain_on_chan; 5541 5542 return p2p_listen(wpa_s->global->p2p, timeout); 5543 } 5544 5545 5546 /** 5547 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 5548 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5549 * @freq: Frequency of the channel in MHz 5550 * 5551 * This callback is called when the driver indicates that a remain-on-channel 5552 * operation has been completed, i.e., the duration on the requested channel 5553 * has timed out. 5554 */ 5555 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 5556 unsigned int freq) 5557 { 5558 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 5559 "(p2p_long_listen=%d ms pending_action_tx=%p)", 5560 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 5561 wpas_p2p_listen_work_done(wpa_s); 5562 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5563 return; 5564 if (wpa_s->p2p_long_listen > 0) 5565 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 5566 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 5567 return; /* P2P module started a new operation */ 5568 if (offchannel_pending_action_tx(wpa_s)) 5569 return; 5570 if (wpa_s->p2p_long_listen > 0) { 5571 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 5572 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 5573 } else { 5574 /* 5575 * When listen duration is over, stop listen & update p2p_state 5576 * to IDLE. 5577 */ 5578 p2p_stop_listen(wpa_s->global->p2p); 5579 } 5580 } 5581 5582 5583 /** 5584 * wpas_p2p_group_remove - Remove a P2P group 5585 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5586 * @ifname: Network interface name of the group interface or "*" to remove all 5587 * groups 5588 * Returns: 0 on success, -1 on failure 5589 * 5590 * This function is used to remove a P2P group. This can be used to disconnect 5591 * from a group in which the local end is a P2P Client or to end a P2P Group in 5592 * case the local end is the Group Owner. If a virtual network interface was 5593 * created for this group, that interface will be removed. Otherwise, only the 5594 * configured P2P group network will be removed from the interface. 5595 */ 5596 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 5597 { 5598 struct wpa_global *global = wpa_s->global; 5599 struct wpa_supplicant *calling_wpa_s = wpa_s; 5600 5601 if (os_strcmp(ifname, "*") == 0) { 5602 struct wpa_supplicant *prev; 5603 wpa_s = global->ifaces; 5604 while (wpa_s) { 5605 prev = wpa_s; 5606 wpa_s = wpa_s->next; 5607 if (prev->p2p_group_interface != 5608 NOT_P2P_GROUP_INTERFACE || 5609 (prev->current_ssid && 5610 prev->current_ssid->p2p_group)) 5611 wpas_p2p_disconnect_safely(prev, calling_wpa_s); 5612 } 5613 return 0; 5614 } 5615 5616 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5617 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5618 break; 5619 } 5620 5621 return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s); 5622 } 5623 5624 5625 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 5626 { 5627 unsigned int r; 5628 5629 if (!wpa_s->conf->num_p2p_pref_chan && !freq) { 5630 unsigned int i, size = P2P_MAX_PREF_CHANNELS; 5631 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS]; 5632 int res; 5633 5634 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO, 5635 &size, pref_freq_list); 5636 if (!res && size > 0) { 5637 i = 0; 5638 while (i < size && 5639 (!p2p_supported_freq(wpa_s->global->p2p, 5640 pref_freq_list[i]) || 5641 wpas_p2p_disallowed_freq(wpa_s->global, 5642 pref_freq_list[i]))) { 5643 wpa_printf(MSG_DEBUG, 5644 "P2P: preferred_freq_list[%d]=%d is disallowed", 5645 i, pref_freq_list[i]); 5646 i++; 5647 } 5648 if (i != size) { 5649 freq = pref_freq_list[i]; 5650 wpa_printf(MSG_DEBUG, 5651 "P2P: Using preferred_freq_list[%d]=%d", 5652 i, freq); 5653 } else { 5654 wpa_printf(MSG_DEBUG, 5655 "P2P: All driver preferred frequencies are disallowed for P2P use"); 5656 } 5657 } else { 5658 wpa_printf(MSG_DEBUG, 5659 "P2P: No preferred frequency list available"); 5660 } 5661 } 5662 5663 if (freq == 2) { 5664 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 5665 "band"); 5666 if (wpa_s->best_24_freq > 0 && 5667 p2p_supported_freq_go(wpa_s->global->p2p, 5668 wpa_s->best_24_freq)) { 5669 freq = wpa_s->best_24_freq; 5670 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 5671 "channel: %d MHz", freq); 5672 } else { 5673 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5674 return -1; 5675 freq = 2412 + (r % 3) * 25; 5676 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 5677 "channel: %d MHz", freq); 5678 } 5679 } 5680 5681 if (freq == 5) { 5682 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 5683 "band"); 5684 if (wpa_s->best_5_freq > 0 && 5685 p2p_supported_freq_go(wpa_s->global->p2p, 5686 wpa_s->best_5_freq)) { 5687 freq = wpa_s->best_5_freq; 5688 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 5689 "channel: %d MHz", freq); 5690 } else { 5691 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5692 return -1; 5693 freq = 5180 + (r % 4) * 20; 5694 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5695 wpa_printf(MSG_DEBUG, "P2P: Could not select " 5696 "5 GHz channel for P2P group"); 5697 return -1; 5698 } 5699 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 5700 "channel: %d MHz", freq); 5701 } 5702 } 5703 5704 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5705 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5706 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5707 wpa_s->hw.num_modes)) { 5708 /* 5709 * If freq is a DFS channel and DFS is offloaded to the 5710 * driver, allow P2P GO to use it. 5711 */ 5712 wpa_printf(MSG_DEBUG, "P2P: " 5713 "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded", 5714 __func__, freq); 5715 return freq; 5716 } 5717 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 5718 "(%u MHz) is not supported for P2P uses", 5719 freq); 5720 return -1; 5721 } 5722 5723 return freq; 5724 } 5725 5726 5727 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s, 5728 const struct p2p_channels *channels, 5729 int freq) 5730 { 5731 if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) && 5732 p2p_supported_freq_go(wpa_s->global->p2p, freq) && 5733 freq_included(wpa_s, channels, freq)) 5734 return 1; 5735 return 0; 5736 } 5737 5738 5739 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s, 5740 struct p2p_go_neg_results *params, 5741 const struct p2p_channels *channels) 5742 { 5743 unsigned int i, r; 5744 5745 /* try all channels in operating class 115 */ 5746 for (i = 0; i < 4; i++) { 5747 params->freq = 5180 + i * 20; 5748 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5749 freq_included(wpa_s, channels, params->freq) && 5750 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5751 goto out; 5752 } 5753 5754 /* try all channels in operating class 124 */ 5755 for (i = 0; i < 4; i++) { 5756 params->freq = 5745 + i * 20; 5757 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5758 freq_included(wpa_s, channels, params->freq) && 5759 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5760 goto out; 5761 } 5762 5763 /* try social channel class 180 channel 2 */ 5764 params->freq = 58320 + 1 * 2160; 5765 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5766 freq_included(wpa_s, channels, params->freq) && 5767 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5768 goto out; 5769 5770 /* try all channels in reg. class 180 */ 5771 for (i = 0; i < 4; i++) { 5772 params->freq = 58320 + i * 2160; 5773 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) && 5774 freq_included(wpa_s, channels, params->freq) && 5775 p2p_supported_freq(wpa_s->global->p2p, params->freq)) 5776 goto out; 5777 } 5778 5779 /* try some random selection of the social channels */ 5780 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 5781 return; 5782 5783 for (i = 0; i < 3; i++) { 5784 params->freq = 2412 + ((r + i) % 3) * 25; 5785 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5786 goto out; 5787 } 5788 5789 /* try all other channels in operating class 81 */ 5790 for (i = 0; i < 11; i++) { 5791 params->freq = 2412 + i * 5; 5792 5793 /* skip social channels; covered in the previous loop */ 5794 if (params->freq == 2412 || 5795 params->freq == 2437 || 5796 params->freq == 2462) 5797 continue; 5798 5799 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq)) 5800 goto out; 5801 } 5802 5803 params->freq = 0; 5804 wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed"); 5805 return; 5806 out: 5807 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)", 5808 params->freq); 5809 } 5810 5811 5812 static int wpas_same_band(int freq1, int freq2) 5813 { 5814 enum hostapd_hw_mode mode1, mode2; 5815 u8 chan1, chan2; 5816 5817 mode1 = ieee80211_freq_to_chan(freq1, &chan1); 5818 mode2 = ieee80211_freq_to_chan(freq2, &chan2); 5819 if (mode1 == NUM_HOSTAPD_MODES) 5820 return 0; 5821 return mode1 == mode2; 5822 } 5823 5824 5825 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 5826 struct p2p_go_neg_results *params, 5827 int freq, int vht_center_freq2, int ht40, 5828 int vht, int max_oper_chwidth, 5829 const struct p2p_channels *channels) 5830 { 5831 struct wpa_used_freq_data *freqs; 5832 unsigned int cand; 5833 unsigned int num, i; 5834 int ignore_no_freqs = 0; 5835 int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0; 5836 5837 os_memset(params, 0, sizeof(*params)); 5838 params->role_go = 1; 5839 params->ht40 = ht40; 5840 params->vht = vht; 5841 params->max_oper_chwidth = max_oper_chwidth; 5842 params->vht_center_freq2 = vht_center_freq2; 5843 5844 freqs = os_calloc(wpa_s->num_multichan_concurrent, 5845 sizeof(struct wpa_used_freq_data)); 5846 if (!freqs) 5847 return -1; 5848 5849 num = get_shared_radio_freqs_data(wpa_s, freqs, 5850 wpa_s->num_multichan_concurrent); 5851 5852 if (wpa_s->current_ssid && 5853 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO && 5854 wpa_s->wpa_state == WPA_COMPLETED) { 5855 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO", 5856 __func__); 5857 5858 /* 5859 * If the frequency selection is done for an active P2P GO that 5860 * is not sharing a frequency, allow to select a new frequency 5861 * even if there are no unused frequencies as we are about to 5862 * move the P2P GO so its frequency can be re-used. 5863 */ 5864 for (i = 0; i < num; i++) { 5865 if (freqs[i].freq == wpa_s->current_ssid->frequency && 5866 freqs[i].flags == 0) { 5867 ignore_no_freqs = 1; 5868 break; 5869 } 5870 } 5871 } 5872 5873 /* try using the forced freq */ 5874 if (freq) { 5875 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) || 5876 !freq_included(wpa_s, channels, freq)) { 5877 wpa_printf(MSG_DEBUG, 5878 "P2P: Forced GO freq %d MHz disallowed", 5879 freq); 5880 goto fail; 5881 } 5882 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 5883 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 5884 ieee80211_is_dfs(freq, wpa_s->hw.modes, 5885 wpa_s->hw.num_modes)) { 5886 /* 5887 * If freq is a DFS channel and DFS is offloaded 5888 * to the driver, allow P2P GO to use it. 5889 */ 5890 wpa_printf(MSG_DEBUG, 5891 "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded", 5892 __func__, freq); 5893 } else { 5894 wpa_printf(MSG_DEBUG, 5895 "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses", 5896 freq); 5897 goto fail; 5898 } 5899 } 5900 5901 for (i = 0; i < num; i++) { 5902 if (freqs[i].freq == freq) { 5903 wpa_printf(MSG_DEBUG, 5904 "P2P: forced freq (%d MHz) is also shared", 5905 freq); 5906 params->freq = freq; 5907 goto success; 5908 } 5909 } 5910 5911 if (!ignore_no_freqs && !unused_channels) { 5912 wpa_printf(MSG_DEBUG, 5913 "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use", 5914 freq); 5915 goto fail; 5916 } 5917 5918 wpa_printf(MSG_DEBUG, 5919 "P2P: force GO freq (%d MHz) on a free channel", 5920 freq); 5921 params->freq = freq; 5922 goto success; 5923 } 5924 5925 /* consider using one of the shared frequencies */ 5926 if (num && 5927 (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) { 5928 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num); 5929 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 5930 wpa_printf(MSG_DEBUG, 5931 "P2P: Use shared freq (%d MHz) for GO", 5932 cand); 5933 params->freq = cand; 5934 goto success; 5935 } 5936 5937 /* try using one of the shared freqs */ 5938 for (i = 0; i < num; i++) { 5939 if (wpas_p2p_supported_freq_go(wpa_s, channels, 5940 freqs[i].freq)) { 5941 wpa_printf(MSG_DEBUG, 5942 "P2P: Use shared freq (%d MHz) for GO", 5943 freqs[i].freq); 5944 params->freq = freqs[i].freq; 5945 goto success; 5946 } 5947 } 5948 } 5949 5950 if (!ignore_no_freqs && !unused_channels) { 5951 wpa_printf(MSG_DEBUG, 5952 "P2P: Cannot force GO on any of the channels we are already using"); 5953 goto fail; 5954 } 5955 5956 /* try using the setting from the configuration file */ 5957 if (wpa_s->conf->p2p_oper_reg_class == 81 && 5958 wpa_s->conf->p2p_oper_channel >= 1 && 5959 wpa_s->conf->p2p_oper_channel <= 11 && 5960 wpas_p2p_supported_freq_go( 5961 wpa_s, channels, 5962 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 5963 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 5964 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5965 "frequency %d MHz", params->freq); 5966 goto success; 5967 } 5968 5969 if ((wpa_s->conf->p2p_oper_reg_class == 115 || 5970 wpa_s->conf->p2p_oper_reg_class == 116 || 5971 wpa_s->conf->p2p_oper_reg_class == 117 || 5972 wpa_s->conf->p2p_oper_reg_class == 124 || 5973 wpa_s->conf->p2p_oper_reg_class == 125 || 5974 wpa_s->conf->p2p_oper_reg_class == 126 || 5975 wpa_s->conf->p2p_oper_reg_class == 127) && 5976 wpas_p2p_supported_freq_go(wpa_s, channels, 5977 5000 + 5978 5 * wpa_s->conf->p2p_oper_channel)) { 5979 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 5980 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5981 "frequency %d MHz", params->freq); 5982 goto success; 5983 } 5984 5985 /* Try using best channels */ 5986 if (wpa_s->conf->p2p_oper_channel == 0 && 5987 wpa_s->best_overall_freq > 0 && 5988 wpas_p2p_supported_freq_go(wpa_s, channels, 5989 wpa_s->best_overall_freq)) { 5990 params->freq = wpa_s->best_overall_freq; 5991 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 5992 "channel %d MHz", params->freq); 5993 goto success; 5994 } 5995 5996 if (wpa_s->conf->p2p_oper_channel == 0 && 5997 wpa_s->best_24_freq > 0 && 5998 wpas_p2p_supported_freq_go(wpa_s, channels, 5999 wpa_s->best_24_freq)) { 6000 params->freq = wpa_s->best_24_freq; 6001 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 6002 "channel %d MHz", params->freq); 6003 goto success; 6004 } 6005 6006 if (wpa_s->conf->p2p_oper_channel == 0 && 6007 wpa_s->best_5_freq > 0 && 6008 wpas_p2p_supported_freq_go(wpa_s, channels, 6009 wpa_s->best_5_freq)) { 6010 params->freq = wpa_s->best_5_freq; 6011 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 6012 "channel %d MHz", params->freq); 6013 goto success; 6014 } 6015 6016 /* try using preferred channels */ 6017 cand = p2p_get_pref_freq(wpa_s->global->p2p, channels); 6018 if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6019 params->freq = cand; 6020 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 6021 "channels", params->freq); 6022 goto success; 6023 } 6024 6025 /* Try using a channel that allows VHT to be used with 80 MHz */ 6026 if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) { 6027 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6028 enum hostapd_hw_mode mode; 6029 struct hostapd_hw_modes *hwmode; 6030 u8 chan; 6031 6032 cand = wpa_s->p2p_group_common_freqs[i]; 6033 mode = ieee80211_freq_to_chan(cand, &chan); 6034 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 6035 mode); 6036 if (!hwmode || 6037 wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6038 BW80) != ALLOWED) 6039 continue; 6040 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6041 params->freq = cand; 6042 wpa_printf(MSG_DEBUG, 6043 "P2P: Use freq %d MHz common with the peer and allowing VHT80", 6044 params->freq); 6045 goto success; 6046 } 6047 } 6048 } 6049 6050 /* Try using a channel that allows HT to be used with 40 MHz on the same 6051 * band so that CSA can be used */ 6052 if (wpa_s->current_ssid && wpa_s->hw.modes && 6053 wpa_s->p2p_group_common_freqs) { 6054 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6055 enum hostapd_hw_mode mode; 6056 struct hostapd_hw_modes *hwmode; 6057 u8 chan; 6058 6059 cand = wpa_s->p2p_group_common_freqs[i]; 6060 mode = ieee80211_freq_to_chan(cand, &chan); 6061 hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 6062 mode); 6063 if (!wpas_same_band(wpa_s->current_ssid->frequency, 6064 cand) || 6065 !hwmode || 6066 (wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6067 BW40MINUS) != ALLOWED && 6068 wpas_p2p_verify_channel(wpa_s, hwmode, chan, 6069 BW40PLUS) != ALLOWED)) 6070 continue; 6071 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6072 params->freq = cand; 6073 wpa_printf(MSG_DEBUG, 6074 "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band", 6075 params->freq); 6076 goto success; 6077 } 6078 } 6079 } 6080 6081 /* Try using one of the group common freqs on the same band so that CSA 6082 * can be used */ 6083 if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) { 6084 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6085 cand = wpa_s->p2p_group_common_freqs[i]; 6086 if (!wpas_same_band(wpa_s->current_ssid->frequency, 6087 cand)) 6088 continue; 6089 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6090 params->freq = cand; 6091 wpa_printf(MSG_DEBUG, 6092 "P2P: Use freq %d MHz common with the peer and maintaining same band", 6093 params->freq); 6094 goto success; 6095 } 6096 } 6097 } 6098 6099 /* Try using one of the group common freqs */ 6100 if (wpa_s->p2p_group_common_freqs) { 6101 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) { 6102 cand = wpa_s->p2p_group_common_freqs[i]; 6103 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) { 6104 params->freq = cand; 6105 wpa_printf(MSG_DEBUG, 6106 "P2P: Use freq %d MHz common with the peer", 6107 params->freq); 6108 goto success; 6109 } 6110 } 6111 } 6112 6113 /* no preference, select some channel */ 6114 wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels); 6115 6116 if (params->freq == 0) { 6117 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use"); 6118 goto fail; 6119 } 6120 6121 success: 6122 os_free(freqs); 6123 return 0; 6124 fail: 6125 os_free(freqs); 6126 return -1; 6127 } 6128 6129 6130 static struct wpa_supplicant * 6131 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 6132 int go) 6133 { 6134 struct wpa_supplicant *group_wpa_s; 6135 6136 if (!wpas_p2p_create_iface(wpa_s)) { 6137 if (wpa_s->p2p_mgmt) { 6138 /* 6139 * We may be called on the p2p_dev interface which 6140 * cannot be used for group operations, so always use 6141 * the primary interface. 6142 */ 6143 wpa_s->parent->p2pdev = wpa_s; 6144 wpa_s = wpa_s->parent; 6145 } 6146 wpa_dbg(wpa_s, MSG_DEBUG, 6147 "P2P: Use primary interface for group operations"); 6148 wpa_s->p2p_first_connection_timeout = 0; 6149 if (wpa_s != wpa_s->p2pdev) 6150 wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev); 6151 return wpa_s; 6152 } 6153 6154 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 6155 WPA_IF_P2P_CLIENT) < 0) { 6156 wpa_msg_global(wpa_s, MSG_ERROR, 6157 "P2P: Failed to add group interface"); 6158 return NULL; 6159 } 6160 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 6161 if (group_wpa_s == NULL) { 6162 wpa_msg_global(wpa_s, MSG_ERROR, 6163 "P2P: Failed to initialize group interface"); 6164 wpas_p2p_remove_pending_group_interface(wpa_s); 6165 return NULL; 6166 } 6167 6168 if (go && wpa_s->p2p_go_do_acs) { 6169 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs; 6170 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band; 6171 wpa_s->p2p_go_do_acs = 0; 6172 } 6173 6174 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 6175 group_wpa_s->ifname); 6176 group_wpa_s->p2p_first_connection_timeout = 0; 6177 return group_wpa_s; 6178 } 6179 6180 6181 /** 6182 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 6183 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 6184 * @persistent_group: Whether to create a persistent group 6185 * @freq: Frequency for the group or 0 to indicate no hardcoding 6186 * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80 6187 * @ht40: Start GO with 40 MHz channel width 6188 * @vht: Start GO with VHT support 6189 * @vht_chwidth: channel bandwidth for GO operating with VHT support 6190 * Returns: 0 on success, -1 on failure 6191 * 6192 * This function creates a new P2P group with the local end as the Group Owner, 6193 * i.e., without using Group Owner Negotiation. 6194 */ 6195 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 6196 int freq, int vht_center_freq2, int ht40, int vht, 6197 int max_oper_chwidth) 6198 { 6199 struct p2p_go_neg_results params; 6200 6201 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6202 return -1; 6203 6204 os_free(wpa_s->global->add_psk); 6205 wpa_s->global->add_psk = NULL; 6206 6207 /* Make sure we are not running find during connection establishment */ 6208 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 6209 wpas_p2p_stop_find_oper(wpa_s); 6210 6211 if (!wpa_s->p2p_go_do_acs) { 6212 freq = wpas_p2p_select_go_freq(wpa_s, freq); 6213 if (freq < 0) 6214 return -1; 6215 } 6216 6217 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6218 ht40, vht, max_oper_chwidth, NULL)) 6219 return -1; 6220 6221 p2p_go_params(wpa_s->global->p2p, ¶ms); 6222 params.persistent_group = persistent_group; 6223 6224 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 6225 if (wpa_s == NULL) 6226 return -1; 6227 wpas_start_wps_go(wpa_s, ¶ms, 0); 6228 6229 return 0; 6230 } 6231 6232 6233 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 6234 struct wpa_ssid *params, int addr_allocated, 6235 int freq, int force_scan) 6236 { 6237 struct wpa_ssid *ssid; 6238 6239 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 6240 if (wpa_s == NULL) 6241 return -1; 6242 if (force_scan) 6243 os_get_reltime(&wpa_s->scan_min_time); 6244 wpa_s->p2p_last_4way_hs_fail = NULL; 6245 6246 wpa_supplicant_ap_deinit(wpa_s); 6247 6248 ssid = wpa_config_add_network(wpa_s->conf); 6249 if (ssid == NULL) 6250 return -1; 6251 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN); 6252 wpa_config_set_network_defaults(ssid); 6253 ssid->temporary = 1; 6254 ssid->proto = WPA_PROTO_RSN; 6255 ssid->pbss = params->pbss; 6256 ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP : 6257 WPA_CIPHER_CCMP; 6258 ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP; 6259 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 6260 ssid->ssid = os_malloc(params->ssid_len); 6261 if (ssid->ssid == NULL) { 6262 wpa_config_remove_network(wpa_s->conf, ssid->id); 6263 return -1; 6264 } 6265 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 6266 ssid->ssid_len = params->ssid_len; 6267 ssid->p2p_group = 1; 6268 ssid->export_keys = 1; 6269 if (params->psk_set) { 6270 os_memcpy(ssid->psk, params->psk, 32); 6271 ssid->psk_set = 1; 6272 } 6273 if (params->passphrase) 6274 ssid->passphrase = os_strdup(params->passphrase); 6275 6276 wpa_s->show_group_started = 1; 6277 wpa_s->p2p_in_invitation = 1; 6278 wpa_s->p2p_invite_go_freq = freq; 6279 wpa_s->p2p_go_group_formation_completed = 0; 6280 wpa_s->global->p2p_group_formation = wpa_s; 6281 6282 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6283 NULL); 6284 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6285 wpas_p2p_group_formation_timeout, 6286 wpa_s->p2pdev, NULL); 6287 wpa_supplicant_select_network(wpa_s, ssid); 6288 6289 return 0; 6290 } 6291 6292 6293 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 6294 struct wpa_ssid *ssid, int addr_allocated, 6295 int force_freq, int neg_freq, 6296 int vht_center_freq2, int ht40, 6297 int vht, int max_oper_chwidth, 6298 const struct p2p_channels *channels, 6299 int connection_timeout, int force_scan) 6300 { 6301 struct p2p_go_neg_results params; 6302 int go = 0, freq; 6303 6304 if (ssid->disabled != 2 || ssid->ssid == NULL) 6305 return -1; 6306 6307 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 6308 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 6309 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 6310 "already running"); 6311 if (go == 0 && 6312 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6313 wpa_s->p2pdev, NULL)) { 6314 /* 6315 * This can happen if Invitation Response frame was lost 6316 * and the peer (GO of a persistent group) tries to 6317 * invite us again. Reschedule the timeout to avoid 6318 * terminating the wait for the connection too early 6319 * since we now know that the peer is still trying to 6320 * invite us instead of having already started the GO. 6321 */ 6322 wpa_printf(MSG_DEBUG, 6323 "P2P: Reschedule group formation timeout since peer is still trying to invite us"); 6324 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6325 wpas_p2p_group_formation_timeout, 6326 wpa_s->p2pdev, NULL); 6327 } 6328 return 0; 6329 } 6330 6331 os_free(wpa_s->global->add_psk); 6332 wpa_s->global->add_psk = NULL; 6333 6334 /* Make sure we are not running find during connection establishment */ 6335 wpas_p2p_stop_find_oper(wpa_s); 6336 6337 wpa_s->p2p_fallback_to_go_neg = 0; 6338 6339 if (ssid->mode == WPAS_MODE_P2P_GO) { 6340 if (force_freq > 0) { 6341 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 6342 if (freq < 0) 6343 return -1; 6344 } else { 6345 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 6346 if (freq < 0 || 6347 (freq > 0 && !freq_included(wpa_s, channels, freq))) 6348 freq = 0; 6349 } 6350 } else if (ssid->mode == WPAS_MODE_INFRA) { 6351 freq = neg_freq; 6352 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) { 6353 struct os_reltime now; 6354 struct wpa_bss *bss = 6355 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid); 6356 6357 os_get_reltime(&now); 6358 if (bss && 6359 !os_reltime_expired(&now, &bss->last_update, 5) && 6360 freq_included(wpa_s, channels, bss->freq)) 6361 freq = bss->freq; 6362 else 6363 freq = 0; 6364 } 6365 6366 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq, 6367 force_scan); 6368 } else { 6369 return -1; 6370 } 6371 6372 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, vht_center_freq2, 6373 ht40, vht, max_oper_chwidth, channels)) 6374 return -1; 6375 6376 params.role_go = 1; 6377 params.psk_set = ssid->psk_set; 6378 if (params.psk_set) 6379 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 6380 if (ssid->passphrase) { 6381 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 6382 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 6383 "persistent group"); 6384 return -1; 6385 } 6386 os_strlcpy(params.passphrase, ssid->passphrase, 6387 sizeof(params.passphrase)); 6388 } 6389 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 6390 params.ssid_len = ssid->ssid_len; 6391 params.persistent_group = 1; 6392 6393 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 6394 if (wpa_s == NULL) 6395 return -1; 6396 6397 p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS); 6398 6399 wpa_s->p2p_first_connection_timeout = connection_timeout; 6400 wpas_start_wps_go(wpa_s, ¶ms, 0); 6401 6402 return 0; 6403 } 6404 6405 6406 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 6407 struct wpabuf *proberesp_ies) 6408 { 6409 struct wpa_supplicant *wpa_s = ctx; 6410 if (wpa_s->ap_iface) { 6411 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 6412 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 6413 wpabuf_free(beacon_ies); 6414 wpabuf_free(proberesp_ies); 6415 return; 6416 } 6417 if (beacon_ies) { 6418 wpabuf_free(hapd->p2p_beacon_ie); 6419 hapd->p2p_beacon_ie = beacon_ies; 6420 } 6421 wpabuf_free(hapd->p2p_probe_resp_ie); 6422 hapd->p2p_probe_resp_ie = proberesp_ies; 6423 } else { 6424 wpabuf_free(beacon_ies); 6425 wpabuf_free(proberesp_ies); 6426 } 6427 wpa_supplicant_ap_update_beacon(wpa_s); 6428 } 6429 6430 6431 static void wpas_p2p_idle_update(void *ctx, int idle) 6432 { 6433 struct wpa_supplicant *wpa_s = ctx; 6434 if (!wpa_s->ap_iface) 6435 return; 6436 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 6437 if (idle) { 6438 if (wpa_s->global->p2p_fail_on_wps_complete && 6439 wpa_s->p2p_in_provisioning) { 6440 wpas_p2p_grpform_fail_after_wps(wpa_s); 6441 return; 6442 } 6443 wpas_p2p_set_group_idle_timeout(wpa_s); 6444 } else 6445 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 6446 } 6447 6448 6449 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 6450 struct wpa_ssid *ssid) 6451 { 6452 struct p2p_group *group; 6453 struct p2p_group_config *cfg; 6454 6455 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6456 !ssid->p2p_group) 6457 return NULL; 6458 6459 cfg = os_zalloc(sizeof(*cfg)); 6460 if (cfg == NULL) 6461 return NULL; 6462 6463 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 6464 cfg->persistent_group = 2; 6465 else if (ssid->p2p_persistent_group) 6466 cfg->persistent_group = 1; 6467 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 6468 if (wpa_s->max_stations && 6469 wpa_s->max_stations < wpa_s->conf->max_num_sta) 6470 cfg->max_clients = wpa_s->max_stations; 6471 else 6472 cfg->max_clients = wpa_s->conf->max_num_sta; 6473 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 6474 cfg->ssid_len = ssid->ssid_len; 6475 cfg->freq = ssid->frequency; 6476 cfg->cb_ctx = wpa_s; 6477 cfg->ie_update = wpas_p2p_ie_update; 6478 cfg->idle_update = wpas_p2p_idle_update; 6479 cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start) 6480 != 0; 6481 6482 group = p2p_group_init(wpa_s->global->p2p, cfg); 6483 if (group == NULL) 6484 os_free(cfg); 6485 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 6486 p2p_group_notif_formation_done(group); 6487 wpa_s->p2p_group = group; 6488 return group; 6489 } 6490 6491 6492 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6493 int registrar) 6494 { 6495 struct wpa_ssid *ssid = wpa_s->current_ssid; 6496 6497 if (!wpa_s->p2p_in_provisioning) { 6498 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 6499 "provisioning not in progress"); 6500 return; 6501 } 6502 6503 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6504 u8 go_dev_addr[ETH_ALEN]; 6505 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 6506 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 6507 ssid->ssid_len); 6508 /* Clear any stored provisioning info */ 6509 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 6510 } 6511 6512 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev, 6513 NULL); 6514 wpa_s->p2p_go_group_formation_completed = 1; 6515 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 6516 /* 6517 * Use a separate timeout for initial data connection to 6518 * complete to allow the group to be removed automatically if 6519 * something goes wrong in this step before the P2P group idle 6520 * timeout mechanism is taken into use. 6521 */ 6522 wpa_dbg(wpa_s, MSG_DEBUG, 6523 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 6524 P2P_MAX_INITIAL_CONN_WAIT); 6525 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 6526 wpas_p2p_group_formation_timeout, 6527 wpa_s->p2pdev, NULL); 6528 /* Complete group formation on successful data connection. */ 6529 wpa_s->p2p_go_group_formation_completed = 0; 6530 } else if (ssid) { 6531 /* 6532 * Use a separate timeout for initial data connection to 6533 * complete to allow the group to be removed automatically if 6534 * the client does not complete data connection successfully. 6535 */ 6536 wpa_dbg(wpa_s, MSG_DEBUG, 6537 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 6538 P2P_MAX_INITIAL_CONN_WAIT_GO); 6539 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 6540 wpas_p2p_group_formation_timeout, 6541 wpa_s->p2pdev, NULL); 6542 /* 6543 * Complete group formation on first successful data connection 6544 */ 6545 wpa_s->p2p_go_group_formation_completed = 0; 6546 } 6547 if (wpa_s->global->p2p) 6548 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 6549 wpas_group_formation_completed(wpa_s, 1, 0); 6550 } 6551 6552 6553 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 6554 struct wps_event_fail *fail) 6555 { 6556 if (!wpa_s->p2p_in_provisioning) { 6557 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 6558 "provisioning not in progress"); 6559 return; 6560 } 6561 6562 if (wpa_s->go_params) { 6563 p2p_clear_provisioning_info( 6564 wpa_s->global->p2p, 6565 wpa_s->go_params->peer_device_addr); 6566 } 6567 6568 wpas_notify_p2p_wps_failed(wpa_s, fail); 6569 6570 if (wpa_s == wpa_s->global->p2p_group_formation) { 6571 /* 6572 * Allow some time for the failed WPS negotiation exchange to 6573 * complete, but remove the group since group formation cannot 6574 * succeed after provisioning failure. 6575 */ 6576 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 6577 wpa_s->global->p2p_fail_on_wps_complete = 1; 6578 eloop_deplete_timeout(0, 50000, 6579 wpas_p2p_group_formation_timeout, 6580 wpa_s->p2pdev, NULL); 6581 } 6582 } 6583 6584 6585 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 6586 { 6587 if (!wpa_s->global->p2p_fail_on_wps_complete || 6588 !wpa_s->p2p_in_provisioning) 6589 return 0; 6590 6591 wpas_p2p_grpform_fail_after_wps(wpa_s); 6592 6593 return 1; 6594 } 6595 6596 6597 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6598 const char *config_method, 6599 enum wpas_p2p_prov_disc_use use, 6600 struct p2ps_provision *p2ps_prov) 6601 { 6602 u16 config_methods; 6603 6604 wpa_s->global->pending_p2ps_group = 0; 6605 wpa_s->global->pending_p2ps_group_freq = 0; 6606 wpa_s->p2p_fallback_to_go_neg = 0; 6607 wpa_s->pending_pd_use = NORMAL_PD; 6608 if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) { 6609 p2ps_prov->conncap = p2ps_group_capability( 6610 wpa_s, P2PS_SETUP_NONE, p2ps_prov->role, 6611 &p2ps_prov->force_freq, &p2ps_prov->pref_freq); 6612 6613 wpa_printf(MSG_DEBUG, 6614 "P2P: %s conncap: %d - ASP parsed: %x %x %d %s", 6615 __func__, p2ps_prov->conncap, 6616 p2ps_prov->adv_id, p2ps_prov->conncap, 6617 p2ps_prov->status, p2ps_prov->info); 6618 6619 config_methods = 0; 6620 } else if (os_strncmp(config_method, "display", 7) == 0) 6621 config_methods = WPS_CONFIG_DISPLAY; 6622 else if (os_strncmp(config_method, "keypad", 6) == 0) 6623 config_methods = WPS_CONFIG_KEYPAD; 6624 else if (os_strncmp(config_method, "pbc", 3) == 0 || 6625 os_strncmp(config_method, "pushbutton", 10) == 0) 6626 config_methods = WPS_CONFIG_PUSHBUTTON; 6627 else { 6628 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 6629 os_free(p2ps_prov); 6630 return -1; 6631 } 6632 6633 if (use == WPAS_P2P_PD_AUTO) { 6634 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 6635 wpa_s->pending_pd_config_methods = config_methods; 6636 wpa_s->p2p_auto_pd = 1; 6637 wpa_s->p2p_auto_join = 0; 6638 wpa_s->pending_pd_before_join = 0; 6639 wpa_s->auto_pd_scan_retry = 0; 6640 wpas_p2p_stop_find(wpa_s); 6641 wpa_s->p2p_join_scan_count = 0; 6642 os_get_reltime(&wpa_s->p2p_auto_started); 6643 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 6644 wpa_s->p2p_auto_started.sec, 6645 wpa_s->p2p_auto_started.usec); 6646 wpas_p2p_join_scan(wpa_s, NULL); 6647 return 0; 6648 } 6649 6650 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) { 6651 os_free(p2ps_prov); 6652 return -1; 6653 } 6654 6655 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov, 6656 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 6657 0, 1); 6658 } 6659 6660 6661 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 6662 char *end) 6663 { 6664 return p2p_scan_result_text(ies, ies_len, buf, end); 6665 } 6666 6667 6668 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 6669 { 6670 if (!offchannel_pending_action_tx(wpa_s)) 6671 return; 6672 6673 if (wpa_s->p2p_send_action_work) { 6674 wpas_p2p_free_send_action_work(wpa_s); 6675 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 6676 wpa_s, NULL); 6677 offchannel_send_action_done(wpa_s); 6678 } 6679 6680 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 6681 "operation request"); 6682 offchannel_clear_pending_action_tx(wpa_s); 6683 } 6684 6685 6686 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 6687 enum p2p_discovery_type type, 6688 unsigned int num_req_dev_types, const u8 *req_dev_types, 6689 const u8 *dev_id, unsigned int search_delay, 6690 u8 seek_cnt, const char **seek_string, int freq) 6691 { 6692 wpas_p2p_clear_pending_action_tx(wpa_s); 6693 wpa_s->p2p_long_listen = 0; 6694 6695 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 6696 wpa_s->p2p_in_provisioning) { 6697 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s", 6698 (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ? 6699 " (P2P disabled)" : "", 6700 wpa_s->p2p_in_provisioning ? 6701 " (p2p_in_provisioning)" : ""); 6702 return -1; 6703 } 6704 6705 wpa_supplicant_cancel_sched_scan(wpa_s); 6706 6707 return p2p_find(wpa_s->global->p2p, timeout, type, 6708 num_req_dev_types, req_dev_types, dev_id, 6709 search_delay, seek_cnt, seek_string, freq); 6710 } 6711 6712 6713 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s, 6714 struct wpa_scan_results *scan_res) 6715 { 6716 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6717 6718 if (wpa_s->p2p_scan_work) { 6719 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 6720 wpa_s->p2p_scan_work = NULL; 6721 radio_work_done(work); 6722 } 6723 6724 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6725 return; 6726 6727 /* 6728 * Indicate that results have been processed so that the P2P module can 6729 * continue pending tasks. 6730 */ 6731 p2p_scan_res_handled(wpa_s->global->p2p); 6732 } 6733 6734 6735 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 6736 { 6737 wpas_p2p_clear_pending_action_tx(wpa_s); 6738 wpa_s->p2p_long_listen = 0; 6739 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6740 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 6741 6742 if (wpa_s->global->p2p) 6743 p2p_stop_find(wpa_s->global->p2p); 6744 6745 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 6746 wpa_printf(MSG_DEBUG, 6747 "P2P: Do not consider the scan results after stop_find"); 6748 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search; 6749 } 6750 } 6751 6752 6753 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 6754 { 6755 wpas_p2p_stop_find_oper(wpa_s); 6756 if (!wpa_s->global->pending_group_iface_for_p2ps) 6757 wpas_p2p_remove_pending_group_interface(wpa_s); 6758 } 6759 6760 6761 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 6762 { 6763 struct wpa_supplicant *wpa_s = eloop_ctx; 6764 wpa_s->p2p_long_listen = 0; 6765 } 6766 6767 6768 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 6769 { 6770 int res; 6771 6772 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6773 return -1; 6774 6775 if (wpa_s->p2p_lo_started) { 6776 wpa_printf(MSG_DEBUG, 6777 "P2P: Cannot start P2P listen, it is offloaded"); 6778 return -1; 6779 } 6780 6781 wpa_supplicant_cancel_sched_scan(wpa_s); 6782 wpas_p2p_clear_pending_action_tx(wpa_s); 6783 6784 if (timeout == 0) { 6785 /* 6786 * This is a request for unlimited Listen state. However, at 6787 * least for now, this is mapped to a Listen state for one 6788 * hour. 6789 */ 6790 timeout = 3600; 6791 } 6792 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 6793 wpa_s->p2p_long_listen = 0; 6794 6795 /* 6796 * Stop previous find/listen operation to avoid trying to request a new 6797 * remain-on-channel operation while the driver is still running the 6798 * previous one. 6799 */ 6800 if (wpa_s->global->p2p) 6801 p2p_stop_find(wpa_s->global->p2p); 6802 6803 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 6804 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 6805 wpa_s->p2p_long_listen = timeout * 1000; 6806 eloop_register_timeout(timeout, 0, 6807 wpas_p2p_long_listen_timeout, 6808 wpa_s, NULL); 6809 } 6810 6811 return res; 6812 } 6813 6814 6815 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 6816 u8 *buf, size_t len, int p2p_group) 6817 { 6818 struct wpabuf *p2p_ie; 6819 int ret; 6820 6821 if (wpa_s->global->p2p_disabled) 6822 return -1; 6823 /* 6824 * Advertize mandatory cross connection capability even on 6825 * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP. 6826 */ 6827 if (wpa_s->conf->p2p_disabled && p2p_group) 6828 return -1; 6829 if (wpa_s->global->p2p == NULL) 6830 return -1; 6831 if (bss == NULL) 6832 return -1; 6833 6834 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 6835 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 6836 p2p_group, p2p_ie); 6837 wpabuf_free(p2p_ie); 6838 6839 return ret; 6840 } 6841 6842 6843 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 6844 const u8 *dst, const u8 *bssid, 6845 const u8 *ie, size_t ie_len, 6846 unsigned int rx_freq, int ssi_signal) 6847 { 6848 if (wpa_s->global->p2p_disabled) 6849 return 0; 6850 if (wpa_s->global->p2p == NULL) 6851 return 0; 6852 6853 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 6854 ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) { 6855 case P2P_PREQ_NOT_P2P: 6856 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 6857 ssi_signal); 6858 /* fall through */ 6859 case P2P_PREQ_MALFORMED: 6860 case P2P_PREQ_NOT_LISTEN: 6861 case P2P_PREQ_NOT_PROCESSED: 6862 default: /* make gcc happy */ 6863 return 0; 6864 case P2P_PREQ_PROCESSED: 6865 return 1; 6866 } 6867 } 6868 6869 6870 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 6871 const u8 *sa, const u8 *bssid, 6872 u8 category, const u8 *data, size_t len, int freq) 6873 { 6874 if (wpa_s->global->p2p_disabled) 6875 return; 6876 if (wpa_s->global->p2p == NULL) 6877 return; 6878 6879 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 6880 freq); 6881 } 6882 6883 6884 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 6885 { 6886 unsigned int bands; 6887 6888 if (wpa_s->global->p2p_disabled) 6889 return; 6890 if (wpa_s->global->p2p == NULL) 6891 return; 6892 6893 bands = wpas_get_bands(wpa_s, NULL); 6894 p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands); 6895 } 6896 6897 6898 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 6899 { 6900 p2p_group_deinit(wpa_s->p2p_group); 6901 wpa_s->p2p_group = NULL; 6902 6903 wpa_s->ap_configured_cb = NULL; 6904 wpa_s->ap_configured_cb_ctx = NULL; 6905 wpa_s->ap_configured_cb_data = NULL; 6906 wpa_s->connect_without_scan = NULL; 6907 } 6908 6909 6910 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 6911 { 6912 wpa_s->p2p_long_listen = 0; 6913 6914 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6915 return -1; 6916 6917 return p2p_reject(wpa_s->global->p2p, addr); 6918 } 6919 6920 6921 /* Invite to reinvoke a persistent group */ 6922 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 6923 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 6924 int vht_center_freq2, int ht40, int vht, int max_chwidth, 6925 int pref_freq) 6926 { 6927 enum p2p_invite_role role; 6928 u8 *bssid = NULL; 6929 int force_freq = 0; 6930 int res; 6931 int no_pref_freq_given = pref_freq == 0; 6932 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 6933 6934 wpa_s->global->p2p_invite_group = NULL; 6935 if (peer_addr) 6936 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 6937 else 6938 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 6939 6940 wpa_s->p2p_persistent_go_freq = freq; 6941 wpa_s->p2p_go_ht40 = !!ht40; 6942 wpa_s->p2p_go_vht = !!vht; 6943 wpa_s->p2p_go_max_oper_chwidth = max_chwidth; 6944 wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2; 6945 if (ssid->mode == WPAS_MODE_P2P_GO) { 6946 role = P2P_INVITE_ROLE_GO; 6947 if (peer_addr == NULL) { 6948 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 6949 "address in invitation command"); 6950 return -1; 6951 } 6952 if (wpas_p2p_create_iface(wpa_s)) { 6953 if (wpas_p2p_add_group_interface(wpa_s, 6954 WPA_IF_P2P_GO) < 0) { 6955 wpa_printf(MSG_ERROR, "P2P: Failed to " 6956 "allocate a new interface for the " 6957 "group"); 6958 return -1; 6959 } 6960 bssid = wpa_s->pending_interface_addr; 6961 } else if (wpa_s->p2p_mgmt) 6962 bssid = wpa_s->parent->own_addr; 6963 else 6964 bssid = wpa_s->own_addr; 6965 } else { 6966 role = P2P_INVITE_ROLE_CLIENT; 6967 peer_addr = ssid->bssid; 6968 } 6969 wpa_s->pending_invite_ssid_id = ssid->id; 6970 6971 size = P2P_MAX_PREF_CHANNELS; 6972 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 6973 role == P2P_INVITE_ROLE_GO, 6974 pref_freq_list, &size); 6975 if (res) 6976 return res; 6977 6978 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6979 return -1; 6980 6981 p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size); 6982 6983 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 6984 no_pref_freq_given && pref_freq > 0 && 6985 wpa_s->num_multichan_concurrent > 1 && 6986 wpas_p2p_num_unused_channels(wpa_s) > 0) { 6987 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 6988 pref_freq); 6989 pref_freq = 0; 6990 } 6991 6992 /* 6993 * Stop any find/listen operations before invitation and possibly 6994 * connection establishment. 6995 */ 6996 wpas_p2p_stop_find_oper(wpa_s); 6997 6998 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 6999 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 7000 1, pref_freq, -1); 7001 } 7002 7003 7004 /* Invite to join an active group */ 7005 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 7006 const u8 *peer_addr, const u8 *go_dev_addr) 7007 { 7008 struct wpa_global *global = wpa_s->global; 7009 enum p2p_invite_role role; 7010 u8 *bssid = NULL; 7011 struct wpa_ssid *ssid; 7012 int persistent; 7013 int freq = 0, force_freq = 0, pref_freq = 0; 7014 int res; 7015 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size; 7016 7017 wpa_s->p2p_persistent_go_freq = 0; 7018 wpa_s->p2p_go_ht40 = 0; 7019 wpa_s->p2p_go_vht = 0; 7020 wpa_s->p2p_go_vht_center_freq2 = 0; 7021 wpa_s->p2p_go_max_oper_chwidth = 0; 7022 7023 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7024 if (os_strcmp(wpa_s->ifname, ifname) == 0) 7025 break; 7026 } 7027 if (wpa_s == NULL) { 7028 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 7029 return -1; 7030 } 7031 7032 ssid = wpa_s->current_ssid; 7033 if (ssid == NULL) { 7034 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 7035 "invitation"); 7036 return -1; 7037 } 7038 7039 wpa_s->global->p2p_invite_group = wpa_s; 7040 persistent = ssid->p2p_persistent_group && 7041 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr, 7042 ssid->ssid, ssid->ssid_len); 7043 7044 if (ssid->mode == WPAS_MODE_P2P_GO) { 7045 role = P2P_INVITE_ROLE_ACTIVE_GO; 7046 bssid = wpa_s->own_addr; 7047 if (go_dev_addr == NULL) 7048 go_dev_addr = wpa_s->global->p2p_dev_addr; 7049 freq = ssid->frequency; 7050 } else { 7051 role = P2P_INVITE_ROLE_CLIENT; 7052 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 7053 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 7054 "invite to current group"); 7055 return -1; 7056 } 7057 bssid = wpa_s->bssid; 7058 if (go_dev_addr == NULL && 7059 !is_zero_ether_addr(wpa_s->go_dev_addr)) 7060 go_dev_addr = wpa_s->go_dev_addr; 7061 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7062 (int) wpa_s->assoc_freq; 7063 } 7064 wpa_s->p2pdev->pending_invite_ssid_id = -1; 7065 7066 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7067 return -1; 7068 7069 size = P2P_MAX_PREF_CHANNELS; 7070 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 7071 role == P2P_INVITE_ROLE_ACTIVE_GO, 7072 pref_freq_list, &size); 7073 if (res) 7074 return res; 7075 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 7076 7077 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 7078 ssid->ssid, ssid->ssid_len, force_freq, 7079 go_dev_addr, persistent, pref_freq, -1); 7080 } 7081 7082 7083 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 7084 { 7085 struct wpa_ssid *ssid = wpa_s->current_ssid; 7086 u8 go_dev_addr[ETH_ALEN]; 7087 int persistent; 7088 int freq; 7089 u8 ip[3 * 4]; 7090 char ip_addr[100]; 7091 7092 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 7093 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7094 wpa_s->p2pdev, NULL); 7095 } 7096 7097 if (!wpa_s->show_group_started || !ssid) 7098 return; 7099 7100 wpa_s->show_group_started = 0; 7101 if (!wpa_s->p2p_go_group_formation_completed && 7102 wpa_s->global->p2p_group_formation == wpa_s) { 7103 wpa_dbg(wpa_s, MSG_DEBUG, 7104 "P2P: Marking group formation completed on client on data connection"); 7105 wpa_s->p2p_go_group_formation_completed = 1; 7106 wpa_s->global->p2p_group_formation = NULL; 7107 wpa_s->p2p_in_provisioning = 0; 7108 wpa_s->p2p_in_invitation = 0; 7109 } 7110 7111 os_memset(go_dev_addr, 0, ETH_ALEN); 7112 if (ssid->bssid_set) 7113 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 7114 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 7115 ssid->ssid_len); 7116 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 7117 7118 if (wpa_s->global->p2p_group_formation == wpa_s) 7119 wpa_s->global->p2p_group_formation = NULL; 7120 7121 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 7122 (int) wpa_s->assoc_freq; 7123 7124 ip_addr[0] = '\0'; 7125 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 7126 int res; 7127 7128 res = os_snprintf(ip_addr, sizeof(ip_addr), 7129 " ip_addr=%u.%u.%u.%u " 7130 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 7131 ip[0], ip[1], ip[2], ip[3], 7132 ip[4], ip[5], ip[6], ip[7], 7133 ip[8], ip[9], ip[10], ip[11]); 7134 if (os_snprintf_error(sizeof(ip_addr), res)) 7135 ip_addr[0] = '\0'; 7136 } 7137 7138 wpas_p2p_group_started(wpa_s, 0, ssid, freq, 7139 ssid->passphrase == NULL && ssid->psk_set ? 7140 ssid->psk : NULL, 7141 ssid->passphrase, go_dev_addr, persistent, 7142 ip_addr); 7143 7144 if (persistent) 7145 wpas_p2p_store_persistent_group(wpa_s->p2pdev, 7146 ssid, go_dev_addr); 7147 7148 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip); 7149 } 7150 7151 7152 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 7153 u32 interval1, u32 duration2, u32 interval2) 7154 { 7155 int ret; 7156 7157 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7158 return -1; 7159 7160 if (wpa_s->wpa_state < WPA_ASSOCIATED || 7161 wpa_s->current_ssid == NULL || 7162 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 7163 return -1; 7164 7165 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 7166 wpa_s->own_addr, wpa_s->assoc_freq, 7167 duration1, interval1, duration2, interval2); 7168 if (ret == 0) 7169 wpa_s->waiting_presence_resp = 1; 7170 7171 return ret; 7172 } 7173 7174 7175 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 7176 unsigned int interval) 7177 { 7178 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7179 return -1; 7180 7181 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 7182 } 7183 7184 7185 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 7186 { 7187 if (wpa_s->current_ssid == NULL) { 7188 /* 7189 * current_ssid can be cleared when P2P client interface gets 7190 * disconnected, so assume this interface was used as P2P 7191 * client. 7192 */ 7193 return 1; 7194 } 7195 return wpa_s->current_ssid->p2p_group && 7196 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 7197 } 7198 7199 7200 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 7201 { 7202 struct wpa_supplicant *wpa_s = eloop_ctx; 7203 7204 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 7205 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 7206 "disabled"); 7207 return; 7208 } 7209 7210 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 7211 "group"); 7212 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 7213 } 7214 7215 7216 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 7217 { 7218 int timeout; 7219 7220 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7221 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7222 7223 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7224 return; 7225 7226 timeout = wpa_s->conf->p2p_group_idle; 7227 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 7228 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 7229 timeout = P2P_MAX_CLIENT_IDLE; 7230 7231 if (timeout == 0) 7232 return; 7233 7234 if (timeout < 0) { 7235 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 7236 timeout = 0; /* special client mode no-timeout */ 7237 else 7238 return; 7239 } 7240 7241 if (wpa_s->p2p_in_provisioning) { 7242 /* 7243 * Use the normal group formation timeout during the 7244 * provisioning phase to avoid terminating this process too 7245 * early due to group idle timeout. 7246 */ 7247 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7248 "during provisioning"); 7249 return; 7250 } 7251 7252 if (wpa_s->show_group_started) { 7253 /* 7254 * Use the normal group formation timeout between the end of 7255 * the provisioning phase and completion of 4-way handshake to 7256 * avoid terminating this process too early due to group idle 7257 * timeout. 7258 */ 7259 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 7260 "while waiting for initial 4-way handshake to " 7261 "complete"); 7262 return; 7263 } 7264 7265 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 7266 timeout); 7267 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 7268 wpa_s, NULL); 7269 } 7270 7271 7272 /* Returns 1 if the interface was removed */ 7273 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7274 u16 reason_code, const u8 *ie, size_t ie_len, 7275 int locally_generated) 7276 { 7277 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7278 return 0; 7279 7280 if (!locally_generated) 7281 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7282 ie_len); 7283 7284 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 7285 wpa_s->current_ssid && 7286 wpa_s->current_ssid->p2p_group && 7287 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 7288 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 7289 "session is ending"); 7290 if (wpas_p2p_group_delete(wpa_s, 7291 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 7292 > 0) 7293 return 1; 7294 } 7295 7296 return 0; 7297 } 7298 7299 7300 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 7301 u16 reason_code, const u8 *ie, size_t ie_len, 7302 int locally_generated) 7303 { 7304 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7305 return; 7306 7307 if (!locally_generated) 7308 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 7309 ie_len); 7310 } 7311 7312 7313 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 7314 { 7315 struct p2p_data *p2p = wpa_s->global->p2p; 7316 7317 if (p2p == NULL) 7318 return; 7319 7320 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 7321 return; 7322 7323 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 7324 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 7325 7326 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 7327 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 7328 7329 if (wpa_s->wps && 7330 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 7331 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 7332 7333 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 7334 p2p_set_uuid(p2p, wpa_s->wps->uuid); 7335 7336 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 7337 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 7338 p2p_set_model_name(p2p, wpa_s->conf->model_name); 7339 p2p_set_model_number(p2p, wpa_s->conf->model_number); 7340 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 7341 } 7342 7343 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 7344 p2p_set_sec_dev_types(p2p, 7345 (void *) wpa_s->conf->sec_device_type, 7346 wpa_s->conf->num_sec_device_types); 7347 7348 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 7349 int i; 7350 p2p_remove_wps_vendor_extensions(p2p); 7351 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 7352 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 7353 continue; 7354 p2p_add_wps_vendor_extension( 7355 p2p, wpa_s->conf->wps_vendor_ext[i]); 7356 } 7357 } 7358 7359 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 7360 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 7361 char country[3]; 7362 country[0] = wpa_s->conf->country[0]; 7363 country[1] = wpa_s->conf->country[1]; 7364 country[2] = 0x04; 7365 p2p_set_country(p2p, country); 7366 } 7367 7368 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 7369 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 7370 wpa_s->conf->p2p_ssid_postfix ? 7371 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 7372 0); 7373 } 7374 7375 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 7376 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 7377 7378 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 7379 u8 reg_class, channel; 7380 int ret; 7381 unsigned int r; 7382 u8 channel_forced; 7383 7384 if (wpa_s->conf->p2p_listen_reg_class && 7385 wpa_s->conf->p2p_listen_channel) { 7386 reg_class = wpa_s->conf->p2p_listen_reg_class; 7387 channel = wpa_s->conf->p2p_listen_channel; 7388 channel_forced = 1; 7389 } else { 7390 reg_class = 81; 7391 /* 7392 * Pick one of the social channels randomly as the 7393 * listen channel. 7394 */ 7395 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7396 channel = 1; 7397 else 7398 channel = 1 + (r % 3) * 5; 7399 channel_forced = 0; 7400 } 7401 ret = p2p_set_listen_channel(p2p, reg_class, channel, 7402 channel_forced); 7403 if (ret) 7404 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 7405 "failed: %d", ret); 7406 } 7407 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 7408 u8 op_reg_class, op_channel, cfg_op_channel; 7409 int ret = 0; 7410 unsigned int r; 7411 if (wpa_s->conf->p2p_oper_reg_class && 7412 wpa_s->conf->p2p_oper_channel) { 7413 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 7414 op_channel = wpa_s->conf->p2p_oper_channel; 7415 cfg_op_channel = 1; 7416 } else { 7417 op_reg_class = 81; 7418 /* 7419 * Use random operation channel from (1, 6, 11) 7420 *if no other preference is indicated. 7421 */ 7422 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 7423 op_channel = 1; 7424 else 7425 op_channel = 1 + (r % 3) * 5; 7426 cfg_op_channel = 0; 7427 } 7428 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 7429 cfg_op_channel); 7430 if (ret) 7431 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 7432 "failed: %d", ret); 7433 } 7434 7435 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 7436 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 7437 wpa_s->conf->p2p_pref_chan) < 0) { 7438 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 7439 "update failed"); 7440 } 7441 7442 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 7443 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 7444 "update failed"); 7445 } 7446 } 7447 7448 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN) 7449 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len); 7450 } 7451 7452 7453 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 7454 int duration) 7455 { 7456 if (!wpa_s->ap_iface) 7457 return -1; 7458 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 7459 duration); 7460 } 7461 7462 7463 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 7464 { 7465 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7466 return -1; 7467 7468 wpa_s->global->cross_connection = enabled; 7469 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 7470 7471 if (!enabled) { 7472 struct wpa_supplicant *iface; 7473 7474 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7475 { 7476 if (iface->cross_connect_enabled == 0) 7477 continue; 7478 7479 iface->cross_connect_enabled = 0; 7480 iface->cross_connect_in_use = 0; 7481 wpa_msg_global(iface->p2pdev, MSG_INFO, 7482 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7483 iface->ifname, 7484 iface->cross_connect_uplink); 7485 } 7486 } 7487 7488 return 0; 7489 } 7490 7491 7492 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 7493 { 7494 struct wpa_supplicant *iface; 7495 7496 if (!uplink->global->cross_connection) 7497 return; 7498 7499 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7500 if (!iface->cross_connect_enabled) 7501 continue; 7502 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7503 0) 7504 continue; 7505 if (iface->ap_iface == NULL) 7506 continue; 7507 if (iface->cross_connect_in_use) 7508 continue; 7509 7510 iface->cross_connect_in_use = 1; 7511 wpa_msg_global(iface->p2pdev, MSG_INFO, 7512 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7513 iface->ifname, iface->cross_connect_uplink); 7514 } 7515 } 7516 7517 7518 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 7519 { 7520 struct wpa_supplicant *iface; 7521 7522 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 7523 if (!iface->cross_connect_enabled) 7524 continue; 7525 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 7526 0) 7527 continue; 7528 if (!iface->cross_connect_in_use) 7529 continue; 7530 7531 wpa_msg_global(iface->p2pdev, MSG_INFO, 7532 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 7533 iface->ifname, iface->cross_connect_uplink); 7534 iface->cross_connect_in_use = 0; 7535 } 7536 } 7537 7538 7539 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 7540 { 7541 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 7542 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 7543 wpa_s->cross_connect_disallowed) 7544 wpas_p2p_disable_cross_connect(wpa_s); 7545 else 7546 wpas_p2p_enable_cross_connect(wpa_s); 7547 if (!wpa_s->ap_iface && 7548 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 7549 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 7550 } 7551 7552 7553 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 7554 { 7555 wpas_p2p_disable_cross_connect(wpa_s); 7556 if (!wpa_s->ap_iface && 7557 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 7558 wpa_s, NULL)) 7559 wpas_p2p_set_group_idle_timeout(wpa_s); 7560 } 7561 7562 7563 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 7564 { 7565 struct wpa_supplicant *iface; 7566 7567 if (!wpa_s->global->cross_connection) 7568 return; 7569 7570 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7571 if (iface == wpa_s) 7572 continue; 7573 if (iface->drv_flags & 7574 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 7575 continue; 7576 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) && 7577 iface != wpa_s->parent) 7578 continue; 7579 7580 wpa_s->cross_connect_enabled = 1; 7581 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 7582 sizeof(wpa_s->cross_connect_uplink)); 7583 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 7584 "%s to %s whenever uplink is available", 7585 wpa_s->ifname, wpa_s->cross_connect_uplink); 7586 7587 if (iface->ap_iface || iface->current_ssid == NULL || 7588 iface->current_ssid->mode != WPAS_MODE_INFRA || 7589 iface->cross_connect_disallowed || 7590 iface->wpa_state != WPA_COMPLETED) 7591 break; 7592 7593 wpa_s->cross_connect_in_use = 1; 7594 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 7595 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 7596 wpa_s->ifname, wpa_s->cross_connect_uplink); 7597 break; 7598 } 7599 } 7600 7601 7602 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 7603 { 7604 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 7605 !wpa_s->p2p_in_provisioning) 7606 return 0; /* not P2P client operation */ 7607 7608 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 7609 "session overlap"); 7610 if (wpa_s != wpa_s->p2pdev) 7611 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP); 7612 wpas_p2p_group_formation_failed(wpa_s, 0); 7613 return 1; 7614 } 7615 7616 7617 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 7618 { 7619 struct wpa_supplicant *wpa_s = eloop_ctx; 7620 wpas_p2p_notif_pbc_overlap(wpa_s); 7621 } 7622 7623 7624 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s, 7625 enum wpas_p2p_channel_update_trig trig) 7626 { 7627 struct p2p_channels chan, cli_chan; 7628 struct wpa_used_freq_data *freqs = NULL; 7629 unsigned int num = wpa_s->num_multichan_concurrent; 7630 7631 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 7632 return; 7633 7634 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 7635 if (!freqs) 7636 return; 7637 7638 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 7639 7640 os_memset(&chan, 0, sizeof(chan)); 7641 os_memset(&cli_chan, 0, sizeof(cli_chan)); 7642 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 7643 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 7644 "channel list"); 7645 return; 7646 } 7647 7648 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 7649 7650 wpas_p2p_optimize_listen_channel(wpa_s, freqs, num); 7651 7652 /* 7653 * The used frequencies map changed, so it is possible that a GO is 7654 * using a channel that is no longer valid for P2P use. It is also 7655 * possible that due to policy consideration, it would be preferable to 7656 * move it to a frequency already used by other station interfaces. 7657 */ 7658 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig); 7659 7660 os_free(freqs); 7661 } 7662 7663 7664 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 7665 struct wpa_scan_results *scan_res) 7666 { 7667 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 7668 } 7669 7670 7671 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 7672 { 7673 struct wpa_global *global = wpa_s->global; 7674 int found = 0; 7675 const u8 *peer; 7676 7677 if (global->p2p == NULL) 7678 return -1; 7679 7680 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 7681 7682 if (wpa_s->pending_interface_name[0] && 7683 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 7684 found = 1; 7685 7686 peer = p2p_get_go_neg_peer(global->p2p); 7687 if (peer) { 7688 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 7689 MACSTR, MAC2STR(peer)); 7690 p2p_unauthorize(global->p2p, peer); 7691 found = 1; 7692 } 7693 7694 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 7695 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 7696 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 7697 found = 1; 7698 } 7699 7700 if (wpa_s->pending_pd_before_join) { 7701 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 7702 wpa_s->pending_pd_before_join = 0; 7703 found = 1; 7704 } 7705 7706 wpas_p2p_stop_find(wpa_s); 7707 7708 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7709 if (wpa_s == global->p2p_group_formation && 7710 (wpa_s->p2p_in_provisioning || 7711 wpa_s->parent->pending_interface_type == 7712 WPA_IF_P2P_CLIENT)) { 7713 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 7714 "formation found - cancelling", 7715 wpa_s->ifname); 7716 found = 1; 7717 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7718 wpa_s->p2pdev, NULL); 7719 if (wpa_s->p2p_in_provisioning) { 7720 wpas_group_formation_completed(wpa_s, 0, 0); 7721 break; 7722 } 7723 wpas_p2p_group_delete(wpa_s, 7724 P2P_GROUP_REMOVAL_REQUESTED); 7725 break; 7726 } else if (wpa_s->p2p_in_invitation) { 7727 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 7728 wpa_s->ifname); 7729 found = 1; 7730 wpas_p2p_group_formation_failed(wpa_s, 0); 7731 break; 7732 } 7733 } 7734 7735 if (!found) { 7736 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 7737 return -1; 7738 } 7739 7740 return 0; 7741 } 7742 7743 7744 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 7745 { 7746 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 7747 return; 7748 7749 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 7750 "being available anymore"); 7751 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 7752 } 7753 7754 7755 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 7756 int freq_24, int freq_5, int freq_overall) 7757 { 7758 struct p2p_data *p2p = wpa_s->global->p2p; 7759 if (p2p == NULL) 7760 return; 7761 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 7762 } 7763 7764 7765 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 7766 { 7767 u8 peer[ETH_ALEN]; 7768 struct p2p_data *p2p = wpa_s->global->p2p; 7769 7770 if (p2p == NULL) 7771 return -1; 7772 7773 if (hwaddr_aton(addr, peer)) 7774 return -1; 7775 7776 return p2p_unauthorize(p2p, peer); 7777 } 7778 7779 7780 /** 7781 * wpas_p2p_disconnect - Disconnect from a P2P Group 7782 * @wpa_s: Pointer to wpa_supplicant data 7783 * Returns: 0 on success, -1 on failure 7784 * 7785 * This can be used to disconnect from a group in which the local end is a P2P 7786 * Client or to end a P2P Group in case the local end is the Group Owner. If a 7787 * virtual network interface was created for this group, that interface will be 7788 * removed. Otherwise, only the configured P2P group network will be removed 7789 * from the interface. 7790 */ 7791 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 7792 { 7793 7794 if (wpa_s == NULL) 7795 return -1; 7796 7797 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 7798 -1 : 0; 7799 } 7800 7801 7802 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 7803 { 7804 int ret; 7805 7806 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7807 return 0; 7808 7809 ret = p2p_in_progress(wpa_s->global->p2p); 7810 if (ret == 0) { 7811 /* 7812 * Check whether there is an ongoing WPS provisioning step (or 7813 * other parts of group formation) on another interface since 7814 * p2p_in_progress() does not report this to avoid issues for 7815 * scans during such provisioning step. 7816 */ 7817 if (wpa_s->global->p2p_group_formation && 7818 wpa_s->global->p2p_group_formation != wpa_s) { 7819 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 7820 "in group formation", 7821 wpa_s->global->p2p_group_formation->ifname); 7822 ret = 1; 7823 } 7824 } 7825 7826 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 7827 struct os_reltime now; 7828 os_get_reltime(&now); 7829 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 7830 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 7831 /* Wait for the first client has expired */ 7832 wpa_s->global->p2p_go_wait_client.sec = 0; 7833 } else { 7834 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 7835 ret = 1; 7836 } 7837 } 7838 7839 return ret; 7840 } 7841 7842 7843 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 7844 struct wpa_ssid *ssid) 7845 { 7846 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 7847 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7848 wpa_s->p2pdev, NULL) > 0) { 7849 /** 7850 * Remove the network by scheduling the group formation 7851 * timeout to happen immediately. The teardown code 7852 * needs to be scheduled to run asynch later so that we 7853 * don't delete data from under ourselves unexpectedly. 7854 * Calling wpas_p2p_group_formation_timeout directly 7855 * causes a series of crashes in WPS failure scenarios. 7856 */ 7857 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 7858 "P2P group network getting removed"); 7859 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 7860 wpa_s->p2pdev, NULL); 7861 } 7862 } 7863 7864 7865 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 7866 const u8 *addr, const u8 *ssid, 7867 size_t ssid_len) 7868 { 7869 struct wpa_ssid *s; 7870 size_t i; 7871 7872 for (s = wpa_s->conf->ssid; s; s = s->next) { 7873 if (s->disabled != 2) 7874 continue; 7875 if (ssid && 7876 (ssid_len != s->ssid_len || 7877 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 7878 continue; 7879 if (addr == NULL) { 7880 if (s->mode == WPAS_MODE_P2P_GO) 7881 return s; 7882 continue; 7883 } 7884 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 7885 return s; /* peer is GO in the persistent group */ 7886 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 7887 continue; 7888 for (i = 0; i < s->num_p2p_clients; i++) { 7889 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, 7890 addr, ETH_ALEN) == 0) 7891 return s; /* peer is P2P client in persistent 7892 * group */ 7893 } 7894 } 7895 7896 return NULL; 7897 } 7898 7899 7900 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 7901 const u8 *addr) 7902 { 7903 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 7904 wpa_s->p2pdev, NULL) > 0) { 7905 /* 7906 * This can happen if WPS provisioning step is not terminated 7907 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 7908 * peer was able to connect, there is no need to time out group 7909 * formation after this, though. In addition, this is used with 7910 * the initial connection wait on the GO as a separate formation 7911 * timeout and as such, expected to be hit after the initial WPS 7912 * provisioning step. 7913 */ 7914 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 7915 7916 if (!wpa_s->p2p_go_group_formation_completed && 7917 !wpa_s->group_formation_reported) { 7918 /* 7919 * GO has not yet notified group formation success since 7920 * the WPS step was not completed cleanly. Do that 7921 * notification now since the P2P Client was able to 7922 * connect and as such, must have received the 7923 * credential from the WPS step. 7924 */ 7925 if (wpa_s->global->p2p) 7926 p2p_wps_success_cb(wpa_s->global->p2p, addr); 7927 wpas_group_formation_completed(wpa_s, 1, 0); 7928 } 7929 } 7930 if (!wpa_s->p2p_go_group_formation_completed) { 7931 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 7932 wpa_s->p2p_go_group_formation_completed = 1; 7933 wpa_s->global->p2p_group_formation = NULL; 7934 wpa_s->p2p_in_provisioning = 0; 7935 wpa_s->p2p_in_invitation = 0; 7936 } 7937 wpa_s->global->p2p_go_wait_client.sec = 0; 7938 if (addr == NULL) 7939 return; 7940 wpas_p2p_add_persistent_group_client(wpa_s, addr); 7941 } 7942 7943 7944 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 7945 int group_added) 7946 { 7947 struct wpa_supplicant *group = wpa_s; 7948 int ret = 0; 7949 7950 if (wpa_s->global->p2p_group_formation) 7951 group = wpa_s->global->p2p_group_formation; 7952 wpa_s = wpa_s->global->p2p_init_wpa_s; 7953 offchannel_send_action_done(wpa_s); 7954 if (group_added) 7955 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 7956 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 7957 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 7958 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 7959 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 7960 wpa_s->p2p_go_vht_center_freq2, 7961 wpa_s->p2p_persistent_id, 7962 wpa_s->p2p_pd_before_go_neg, 7963 wpa_s->p2p_go_ht40, 7964 wpa_s->p2p_go_vht, 7965 wpa_s->p2p_go_max_oper_chwidth, NULL, 0); 7966 return ret; 7967 } 7968 7969 7970 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 7971 { 7972 int res; 7973 7974 if (!wpa_s->p2p_fallback_to_go_neg || 7975 wpa_s->p2p_in_provisioning <= 5) 7976 return 0; 7977 7978 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 7979 return 0; /* peer operating as a GO */ 7980 7981 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 7982 "fallback to GO Negotiation"); 7983 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG 7984 "reason=GO-not-found"); 7985 res = wpas_p2p_fallback_to_go_neg(wpa_s, 1); 7986 7987 return res == 1 ? 2 : 1; 7988 } 7989 7990 7991 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 7992 { 7993 struct wpa_supplicant *ifs; 7994 7995 if (wpa_s->wpa_state > WPA_SCANNING) { 7996 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 7997 "concurrent operation", 7998 wpa_s->conf->p2p_search_delay); 7999 return wpa_s->conf->p2p_search_delay; 8000 } 8001 8002 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 8003 radio_list) { 8004 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 8005 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 8006 "delay due to concurrent operation on " 8007 "interface %s", 8008 wpa_s->conf->p2p_search_delay, 8009 ifs->ifname); 8010 return wpa_s->conf->p2p_search_delay; 8011 } 8012 } 8013 8014 return 0; 8015 } 8016 8017 8018 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 8019 struct wpa_ssid *s, const u8 *addr, 8020 int iface_addr) 8021 { 8022 struct psk_list_entry *psk, *tmp; 8023 int changed = 0; 8024 8025 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 8026 list) { 8027 if ((iface_addr && !psk->p2p && 8028 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 8029 (!iface_addr && psk->p2p && 8030 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 8031 wpa_dbg(wpa_s, MSG_DEBUG, 8032 "P2P: Remove persistent group PSK list entry for " 8033 MACSTR " p2p=%u", 8034 MAC2STR(psk->addr), psk->p2p); 8035 dl_list_del(&psk->list); 8036 os_free(psk); 8037 changed++; 8038 } 8039 } 8040 8041 return changed; 8042 } 8043 8044 8045 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 8046 const u8 *p2p_dev_addr, 8047 const u8 *psk, size_t psk_len) 8048 { 8049 struct wpa_ssid *ssid = wpa_s->current_ssid; 8050 struct wpa_ssid *persistent; 8051 struct psk_list_entry *p, *last; 8052 8053 if (psk_len != sizeof(p->psk)) 8054 return; 8055 8056 if (p2p_dev_addr) { 8057 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 8058 " p2p_dev_addr=" MACSTR, 8059 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 8060 if (is_zero_ether_addr(p2p_dev_addr)) 8061 p2p_dev_addr = NULL; 8062 } else { 8063 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 8064 MAC2STR(mac_addr)); 8065 } 8066 8067 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 8068 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 8069 /* To be added to persistent group once created */ 8070 if (wpa_s->global->add_psk == NULL) { 8071 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 8072 if (wpa_s->global->add_psk == NULL) 8073 return; 8074 } 8075 p = wpa_s->global->add_psk; 8076 if (p2p_dev_addr) { 8077 p->p2p = 1; 8078 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8079 } else { 8080 p->p2p = 0; 8081 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8082 } 8083 os_memcpy(p->psk, psk, psk_len); 8084 return; 8085 } 8086 8087 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 8088 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 8089 return; 8090 } 8091 8092 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid, 8093 ssid->ssid_len); 8094 if (!persistent) { 8095 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 8096 return; 8097 } 8098 8099 p = os_zalloc(sizeof(*p)); 8100 if (p == NULL) 8101 return; 8102 if (p2p_dev_addr) { 8103 p->p2p = 1; 8104 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 8105 } else { 8106 p->p2p = 0; 8107 os_memcpy(p->addr, mac_addr, ETH_ALEN); 8108 } 8109 os_memcpy(p->psk, psk, psk_len); 8110 8111 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 8112 (last = dl_list_last(&persistent->psk_list, 8113 struct psk_list_entry, list))) { 8114 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 8115 MACSTR " (p2p=%u) to make room for a new one", 8116 MAC2STR(last->addr), last->p2p); 8117 dl_list_del(&last->list); 8118 os_free(last); 8119 } 8120 8121 wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent, 8122 p2p_dev_addr ? p2p_dev_addr : mac_addr, 8123 p2p_dev_addr == NULL); 8124 if (p2p_dev_addr) { 8125 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 8126 MACSTR, MAC2STR(p2p_dev_addr)); 8127 } else { 8128 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 8129 MAC2STR(mac_addr)); 8130 } 8131 dl_list_add(&persistent->psk_list, &p->list); 8132 8133 if (wpa_s->p2pdev->conf->update_config && 8134 wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf)) 8135 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 8136 } 8137 8138 8139 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 8140 struct wpa_ssid *s, const u8 *addr, 8141 int iface_addr) 8142 { 8143 int res; 8144 8145 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 8146 if (res > 0 && wpa_s->conf->update_config && 8147 wpa_config_write(wpa_s->confname, wpa_s->conf)) 8148 wpa_dbg(wpa_s, MSG_DEBUG, 8149 "P2P: Failed to update configuration"); 8150 } 8151 8152 8153 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 8154 const u8 *peer, int iface_addr) 8155 { 8156 struct hostapd_data *hapd; 8157 struct hostapd_wpa_psk *psk, *prev, *rem; 8158 struct sta_info *sta; 8159 8160 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 8161 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 8162 return; 8163 8164 /* Remove per-station PSK entry */ 8165 hapd = wpa_s->ap_iface->bss[0]; 8166 prev = NULL; 8167 psk = hapd->conf->ssid.wpa_psk; 8168 while (psk) { 8169 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 8170 (!iface_addr && 8171 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 8172 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 8173 MACSTR " iface_addr=%d", 8174 MAC2STR(peer), iface_addr); 8175 if (prev) 8176 prev->next = psk->next; 8177 else 8178 hapd->conf->ssid.wpa_psk = psk->next; 8179 rem = psk; 8180 psk = psk->next; 8181 os_free(rem); 8182 } else { 8183 prev = psk; 8184 psk = psk->next; 8185 } 8186 } 8187 8188 /* Disconnect from group */ 8189 if (iface_addr) 8190 sta = ap_get_sta(hapd, peer); 8191 else 8192 sta = ap_get_sta_p2p(hapd, peer); 8193 if (sta) { 8194 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 8195 " (iface_addr=%d) from group", 8196 MAC2STR(peer), iface_addr); 8197 hostapd_drv_sta_deauth(hapd, sta->addr, 8198 WLAN_REASON_DEAUTH_LEAVING); 8199 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 8200 } 8201 } 8202 8203 8204 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 8205 int iface_addr) 8206 { 8207 struct wpa_ssid *s; 8208 struct wpa_supplicant *w; 8209 struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s; 8210 8211 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 8212 8213 /* Remove from any persistent group */ 8214 for (s = p2p_wpa_s->conf->ssid; s; s = s->next) { 8215 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 8216 continue; 8217 if (!iface_addr) 8218 wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0); 8219 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr); 8220 } 8221 8222 /* Remove from any operating group */ 8223 for (w = wpa_s->global->ifaces; w; w = w->next) 8224 wpas_p2p_remove_client_go(w, peer, iface_addr); 8225 } 8226 8227 8228 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 8229 { 8230 struct wpa_supplicant *wpa_s = eloop_ctx; 8231 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 8232 } 8233 8234 8235 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 8236 { 8237 struct wpa_supplicant *wpa_s = eloop_ctx; 8238 8239 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 8240 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 8241 } 8242 8243 8244 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 8245 struct wpa_ssid *ssid) 8246 { 8247 struct wpa_supplicant *iface; 8248 8249 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8250 if (!iface->current_ssid || 8251 iface->current_ssid->frequency == freq || 8252 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 8253 !iface->current_ssid->p2p_group)) 8254 continue; 8255 8256 /* Remove the connection with least priority */ 8257 if (!wpas_is_p2p_prioritized(iface)) { 8258 /* STA connection has priority over existing 8259 * P2P connection, so remove the interface. */ 8260 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 8261 eloop_register_timeout(0, 0, 8262 wpas_p2p_group_freq_conflict, 8263 iface, NULL); 8264 /* If connection in progress is P2P connection, do not 8265 * proceed for the connection. */ 8266 if (wpa_s == iface) 8267 return -1; 8268 else 8269 return 0; 8270 } else { 8271 /* P2P connection has priority, disable the STA network 8272 */ 8273 wpa_supplicant_disable_network(wpa_s->global->ifaces, 8274 ssid); 8275 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 8276 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 8277 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 8278 ETH_ALEN); 8279 /* If P2P connection is in progress, continue 8280 * connecting...*/ 8281 if (wpa_s == iface) 8282 return 0; 8283 else 8284 return -1; 8285 } 8286 } 8287 8288 return 0; 8289 } 8290 8291 8292 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 8293 { 8294 struct wpa_ssid *ssid = wpa_s->current_ssid; 8295 8296 if (ssid == NULL || !ssid->p2p_group) 8297 return 0; 8298 8299 if (wpa_s->p2p_last_4way_hs_fail && 8300 wpa_s->p2p_last_4way_hs_fail == ssid) { 8301 u8 go_dev_addr[ETH_ALEN]; 8302 struct wpa_ssid *persistent; 8303 8304 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 8305 ssid->ssid, 8306 ssid->ssid_len) <= 0) { 8307 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 8308 goto disconnect; 8309 } 8310 8311 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 8312 MACSTR, MAC2STR(go_dev_addr)); 8313 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr, 8314 ssid->ssid, 8315 ssid->ssid_len); 8316 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 8317 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 8318 goto disconnect; 8319 } 8320 wpa_msg_global(wpa_s->p2pdev, MSG_INFO, 8321 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 8322 persistent->id); 8323 disconnect: 8324 wpa_s->p2p_last_4way_hs_fail = NULL; 8325 /* 8326 * Remove the group from a timeout to avoid issues with caller 8327 * continuing to use the interface if this is on a P2P group 8328 * interface. 8329 */ 8330 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 8331 wpa_s, NULL); 8332 return 1; 8333 } 8334 8335 wpa_s->p2p_last_4way_hs_fail = ssid; 8336 return 0; 8337 } 8338 8339 8340 #ifdef CONFIG_WPS_NFC 8341 8342 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 8343 struct wpabuf *p2p) 8344 { 8345 struct wpabuf *ret; 8346 size_t wsc_len; 8347 8348 if (p2p == NULL) { 8349 wpabuf_free(wsc); 8350 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 8351 return NULL; 8352 } 8353 8354 wsc_len = wsc ? wpabuf_len(wsc) : 0; 8355 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 8356 if (ret == NULL) { 8357 wpabuf_free(wsc); 8358 wpabuf_free(p2p); 8359 return NULL; 8360 } 8361 8362 wpabuf_put_be16(ret, wsc_len); 8363 if (wsc) 8364 wpabuf_put_buf(ret, wsc); 8365 wpabuf_put_be16(ret, wpabuf_len(p2p)); 8366 wpabuf_put_buf(ret, p2p); 8367 8368 wpabuf_free(wsc); 8369 wpabuf_free(p2p); 8370 wpa_hexdump_buf(MSG_DEBUG, 8371 "P2P: Generated NFC connection handover message", ret); 8372 8373 if (ndef && ret) { 8374 struct wpabuf *tmp; 8375 tmp = ndef_build_p2p(ret); 8376 wpabuf_free(ret); 8377 if (tmp == NULL) { 8378 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 8379 return NULL; 8380 } 8381 ret = tmp; 8382 } 8383 8384 return ret; 8385 } 8386 8387 8388 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 8389 struct wpa_ssid **ssid, u8 *go_dev_addr) 8390 { 8391 struct wpa_supplicant *iface; 8392 8393 if (go_dev_addr) 8394 os_memset(go_dev_addr, 0, ETH_ALEN); 8395 if (ssid) 8396 *ssid = NULL; 8397 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8398 if (iface->wpa_state < WPA_ASSOCIATING || 8399 iface->current_ssid == NULL || iface->assoc_freq == 0 || 8400 !iface->current_ssid->p2p_group || 8401 iface->current_ssid->mode != WPAS_MODE_INFRA) 8402 continue; 8403 if (ssid) 8404 *ssid = iface->current_ssid; 8405 if (go_dev_addr) 8406 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 8407 return iface->assoc_freq; 8408 } 8409 return 0; 8410 } 8411 8412 8413 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 8414 int ndef) 8415 { 8416 struct wpabuf *wsc, *p2p; 8417 struct wpa_ssid *ssid; 8418 u8 go_dev_addr[ETH_ALEN]; 8419 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8420 8421 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 8422 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 8423 return NULL; 8424 } 8425 8426 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8427 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8428 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 8429 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 8430 return NULL; 8431 } 8432 8433 if (cli_freq == 0) { 8434 wsc = wps_build_nfc_handover_req_p2p( 8435 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 8436 } else 8437 wsc = NULL; 8438 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 8439 go_dev_addr, ssid ? ssid->ssid : NULL, 8440 ssid ? ssid->ssid_len : 0); 8441 8442 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8443 } 8444 8445 8446 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 8447 int ndef, int tag) 8448 { 8449 struct wpabuf *wsc, *p2p; 8450 struct wpa_ssid *ssid; 8451 u8 go_dev_addr[ETH_ALEN]; 8452 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 8453 8454 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8455 return NULL; 8456 8457 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8458 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8459 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8460 return NULL; 8461 8462 if (cli_freq == 0) { 8463 wsc = wps_build_nfc_handover_sel_p2p( 8464 wpa_s->parent->wps, 8465 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 8466 DEV_PW_NFC_CONNECTION_HANDOVER, 8467 wpa_s->conf->wps_nfc_dh_pubkey, 8468 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 8469 } else 8470 wsc = NULL; 8471 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 8472 go_dev_addr, ssid ? ssid->ssid : NULL, 8473 ssid ? ssid->ssid_len : 0); 8474 8475 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 8476 } 8477 8478 8479 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 8480 struct p2p_nfc_params *params) 8481 { 8482 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 8483 "connection handover (freq=%d)", 8484 params->go_freq); 8485 8486 if (params->go_freq && params->go_ssid_len) { 8487 wpa_s->p2p_wps_method = WPS_NFC; 8488 wpa_s->pending_join_wps_method = WPS_NFC; 8489 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 8490 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 8491 ETH_ALEN); 8492 return wpas_p2p_join_start(wpa_s, params->go_freq, 8493 params->go_ssid, 8494 params->go_ssid_len); 8495 } 8496 8497 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8498 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 8499 params->go_freq, wpa_s->p2p_go_vht_center_freq2, 8500 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8501 params->go_ssid_len ? params->go_ssid : NULL, 8502 params->go_ssid_len); 8503 } 8504 8505 8506 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 8507 struct p2p_nfc_params *params, int tag) 8508 { 8509 int res, persistent; 8510 struct wpa_ssid *ssid; 8511 8512 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 8513 "connection handover"); 8514 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 8515 ssid = wpa_s->current_ssid; 8516 if (ssid == NULL) 8517 continue; 8518 if (ssid->mode != WPAS_MODE_P2P_GO) 8519 continue; 8520 if (wpa_s->ap_iface == NULL) 8521 continue; 8522 break; 8523 } 8524 if (wpa_s == NULL) { 8525 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 8526 return -1; 8527 } 8528 8529 if (wpa_s->p2pdev->p2p_oob_dev_pw_id != 8530 DEV_PW_NFC_CONNECTION_HANDOVER && 8531 !wpa_s->p2pdev->p2p_oob_dev_pw) { 8532 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 8533 return -1; 8534 } 8535 res = wpas_ap_wps_add_nfc_pw( 8536 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id, 8537 wpa_s->p2pdev->p2p_oob_dev_pw, 8538 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ? 8539 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL); 8540 if (res) 8541 return res; 8542 8543 if (!tag) { 8544 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 8545 return 0; 8546 } 8547 8548 if (!params->peer || 8549 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 8550 return 0; 8551 8552 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 8553 " to join", MAC2STR(params->peer->p2p_device_addr)); 8554 8555 wpa_s->global->p2p_invite_group = wpa_s; 8556 persistent = ssid->p2p_persistent_group && 8557 wpas_p2p_get_persistent(wpa_s->p2pdev, 8558 params->peer->p2p_device_addr, 8559 ssid->ssid, ssid->ssid_len); 8560 wpa_s->p2pdev->pending_invite_ssid_id = -1; 8561 8562 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 8563 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 8564 ssid->ssid, ssid->ssid_len, ssid->frequency, 8565 wpa_s->global->p2p_dev_addr, persistent, 0, 8566 wpa_s->p2pdev->p2p_oob_dev_pw_id); 8567 } 8568 8569 8570 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 8571 struct p2p_nfc_params *params, 8572 int forced_freq) 8573 { 8574 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 8575 "connection handover"); 8576 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8577 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 8578 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8579 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8580 NULL, 0); 8581 } 8582 8583 8584 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 8585 struct p2p_nfc_params *params, 8586 int forced_freq) 8587 { 8588 int res; 8589 8590 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 8591 "connection handover"); 8592 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 8593 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 8594 forced_freq, wpa_s->p2p_go_vht_center_freq2, 8595 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth, 8596 NULL, 0); 8597 if (res) 8598 return res; 8599 8600 res = wpas_p2p_listen(wpa_s, 60); 8601 if (res) { 8602 p2p_unauthorize(wpa_s->global->p2p, 8603 params->peer->p2p_device_addr); 8604 } 8605 8606 return res; 8607 } 8608 8609 8610 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 8611 const struct wpabuf *data, 8612 int sel, int tag, int forced_freq) 8613 { 8614 const u8 *pos, *end; 8615 u16 len, id; 8616 struct p2p_nfc_params params; 8617 int res; 8618 8619 os_memset(¶ms, 0, sizeof(params)); 8620 params.sel = sel; 8621 8622 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 8623 8624 pos = wpabuf_head(data); 8625 end = pos + wpabuf_len(data); 8626 8627 if (end - pos < 2) { 8628 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 8629 "attributes"); 8630 return -1; 8631 } 8632 len = WPA_GET_BE16(pos); 8633 pos += 2; 8634 if (len > end - pos) { 8635 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 8636 "attributes"); 8637 return -1; 8638 } 8639 params.wsc_attr = pos; 8640 params.wsc_len = len; 8641 pos += len; 8642 8643 if (end - pos < 2) { 8644 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 8645 "attributes"); 8646 return -1; 8647 } 8648 len = WPA_GET_BE16(pos); 8649 pos += 2; 8650 if (len > end - pos) { 8651 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 8652 "attributes"); 8653 return -1; 8654 } 8655 params.p2p_attr = pos; 8656 params.p2p_len = len; 8657 pos += len; 8658 8659 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 8660 params.wsc_attr, params.wsc_len); 8661 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 8662 params.p2p_attr, params.p2p_len); 8663 if (pos < end) { 8664 wpa_hexdump(MSG_DEBUG, 8665 "P2P: Ignored extra data after P2P attributes", 8666 pos, end - pos); 8667 } 8668 8669 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 8670 if (res) 8671 return res; 8672 8673 if (params.next_step == NO_ACTION) 8674 return 0; 8675 8676 if (params.next_step == BOTH_GO) { 8677 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 8678 MAC2STR(params.peer->p2p_device_addr)); 8679 return 0; 8680 } 8681 8682 if (params.next_step == PEER_CLIENT) { 8683 if (!is_zero_ether_addr(params.go_dev_addr)) { 8684 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8685 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 8686 " ssid=\"%s\"", 8687 MAC2STR(params.peer->p2p_device_addr), 8688 params.go_freq, 8689 MAC2STR(params.go_dev_addr), 8690 wpa_ssid_txt(params.go_ssid, 8691 params.go_ssid_len)); 8692 } else { 8693 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 8694 "peer=" MACSTR " freq=%d", 8695 MAC2STR(params.peer->p2p_device_addr), 8696 params.go_freq); 8697 } 8698 return 0; 8699 } 8700 8701 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 8702 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 8703 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 8704 return 0; 8705 } 8706 8707 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8708 wpa_s->p2p_oob_dev_pw = NULL; 8709 8710 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 8711 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 8712 "received"); 8713 return -1; 8714 } 8715 8716 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 8717 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 8718 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 8719 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8720 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 8721 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 8722 wpa_s->p2p_peer_oob_pk_hash_known = 1; 8723 8724 if (tag) { 8725 if (id < 0x10) { 8726 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 8727 "peer OOB Device Password Id %u", id); 8728 return -1; 8729 } 8730 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 8731 "Device Password Id %u", id); 8732 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 8733 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8734 params.oob_dev_pw_len - 8735 WPS_OOB_PUBKEY_HASH_LEN - 2); 8736 wpa_s->p2p_oob_dev_pw_id = id; 8737 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 8738 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 8739 params.oob_dev_pw_len - 8740 WPS_OOB_PUBKEY_HASH_LEN - 2); 8741 if (wpa_s->p2p_oob_dev_pw == NULL) 8742 return -1; 8743 8744 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 8745 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 8746 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 8747 return -1; 8748 } else { 8749 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 8750 "without Device Password"); 8751 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 8752 } 8753 8754 switch (params.next_step) { 8755 case NO_ACTION: 8756 case BOTH_GO: 8757 case PEER_CLIENT: 8758 /* already covered above */ 8759 return 0; 8760 case JOIN_GROUP: 8761 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 8762 case AUTH_JOIN: 8763 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 8764 case INIT_GO_NEG: 8765 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 8766 case RESP_GO_NEG: 8767 /* TODO: use own OOB Dev Pw */ 8768 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 8769 } 8770 8771 return -1; 8772 } 8773 8774 8775 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 8776 const struct wpabuf *data, int forced_freq) 8777 { 8778 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8779 return -1; 8780 8781 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 8782 } 8783 8784 8785 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 8786 const struct wpabuf *req, 8787 const struct wpabuf *sel, int forced_freq) 8788 { 8789 struct wpabuf *tmp; 8790 int ret; 8791 8792 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 8793 return -1; 8794 8795 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 8796 8797 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 8798 wpabuf_head(req), wpabuf_len(req)); 8799 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 8800 wpabuf_head(sel), wpabuf_len(sel)); 8801 if (forced_freq) 8802 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 8803 tmp = ndef_parse_p2p(init ? sel : req); 8804 if (tmp == NULL) { 8805 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 8806 return -1; 8807 } 8808 8809 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 8810 forced_freq); 8811 wpabuf_free(tmp); 8812 8813 return ret; 8814 } 8815 8816 8817 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 8818 { 8819 const u8 *if_addr; 8820 int go_intent = wpa_s->conf->p2p_go_intent; 8821 struct wpa_supplicant *iface; 8822 8823 if (wpa_s->global->p2p == NULL) 8824 return -1; 8825 8826 if (!enabled) { 8827 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 8828 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 8829 { 8830 if (!iface->ap_iface) 8831 continue; 8832 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 8833 } 8834 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 8835 0, NULL); 8836 if (wpa_s->p2p_nfc_tag_enabled) 8837 wpas_p2p_remove_pending_group_interface(wpa_s); 8838 wpa_s->p2p_nfc_tag_enabled = 0; 8839 return 0; 8840 } 8841 8842 if (wpa_s->global->p2p_disabled) 8843 return -1; 8844 8845 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 8846 wpa_s->conf->wps_nfc_dh_privkey == NULL || 8847 wpa_s->conf->wps_nfc_dev_pw == NULL || 8848 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 8849 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 8850 "to allow static handover cases"); 8851 return -1; 8852 } 8853 8854 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 8855 8856 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8857 wpabuf_free(wpa_s->p2p_oob_dev_pw); 8858 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8859 if (wpa_s->p2p_oob_dev_pw == NULL) 8860 return -1; 8861 wpa_s->p2p_peer_oob_pk_hash_known = 0; 8862 8863 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 8864 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 8865 /* 8866 * P2P Group Interface present and the command came on group 8867 * interface, so enable the token for the current interface. 8868 */ 8869 wpa_s->create_p2p_iface = 0; 8870 } else { 8871 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 8872 } 8873 8874 if (wpa_s->create_p2p_iface) { 8875 enum wpa_driver_if_type iftype; 8876 /* Prepare to add a new interface for the group */ 8877 iftype = WPA_IF_P2P_GROUP; 8878 if (go_intent == 15) 8879 iftype = WPA_IF_P2P_GO; 8880 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 8881 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 8882 "interface for the group"); 8883 return -1; 8884 } 8885 8886 if_addr = wpa_s->pending_interface_addr; 8887 } else if (wpa_s->p2p_mgmt) 8888 if_addr = wpa_s->parent->own_addr; 8889 else 8890 if_addr = wpa_s->own_addr; 8891 8892 wpa_s->p2p_nfc_tag_enabled = enabled; 8893 8894 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 8895 struct hostapd_data *hapd; 8896 if (iface->ap_iface == NULL) 8897 continue; 8898 hapd = iface->ap_iface->bss[0]; 8899 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 8900 hapd->conf->wps_nfc_dh_pubkey = 8901 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 8902 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 8903 hapd->conf->wps_nfc_dh_privkey = 8904 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 8905 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 8906 hapd->conf->wps_nfc_dev_pw = 8907 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 8908 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 8909 8910 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 8911 wpa_dbg(iface, MSG_DEBUG, 8912 "P2P: Failed to enable NFC Tag for GO"); 8913 } 8914 } 8915 p2p_set_authorized_oob_dev_pw_id( 8916 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 8917 if_addr); 8918 8919 return 0; 8920 } 8921 8922 #endif /* CONFIG_WPS_NFC */ 8923 8924 8925 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s, 8926 struct wpa_used_freq_data *freqs, 8927 unsigned int num) 8928 { 8929 u8 curr_chan, cand, chan; 8930 unsigned int i; 8931 8932 /* 8933 * If possible, optimize the Listen channel to be a channel that is 8934 * already used by one of the other interfaces. 8935 */ 8936 if (!wpa_s->conf->p2p_optimize_listen_chan) 8937 return; 8938 8939 if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED) 8940 return; 8941 8942 curr_chan = p2p_get_listen_channel(wpa_s->global->p2p); 8943 for (i = 0, cand = 0; i < num; i++) { 8944 ieee80211_freq_to_chan(freqs[i].freq, &chan); 8945 if (curr_chan == chan) { 8946 cand = 0; 8947 break; 8948 } 8949 8950 if (chan == 1 || chan == 6 || chan == 11) 8951 cand = chan; 8952 } 8953 8954 if (cand) { 8955 wpa_dbg(wpa_s, MSG_DEBUG, 8956 "P2P: Update Listen channel to %u based on operating channel", 8957 cand); 8958 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0); 8959 } 8960 } 8961 8962 8963 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s) 8964 { 8965 struct hostapd_config *conf; 8966 struct p2p_go_neg_results params; 8967 struct csa_settings csa_settings; 8968 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 8969 int old_freq = current_ssid->frequency; 8970 int ret; 8971 8972 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 8973 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled"); 8974 return -1; 8975 } 8976 8977 /* 8978 * TODO: This function may not always work correctly. For example, 8979 * when we have a running GO and a BSS on a DFS channel. 8980 */ 8981 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 8982 wpa_dbg(wpa_s, MSG_DEBUG, 8983 "P2P CSA: Failed to select new frequency for GO"); 8984 return -1; 8985 } 8986 8987 if (current_ssid->frequency == params.freq) { 8988 wpa_dbg(wpa_s, MSG_DEBUG, 8989 "P2P CSA: Selected same frequency - not moving GO"); 8990 return 0; 8991 } 8992 8993 conf = hostapd_config_defaults(); 8994 if (!conf) { 8995 wpa_dbg(wpa_s, MSG_DEBUG, 8996 "P2P CSA: Failed to allocate default config"); 8997 return -1; 8998 } 8999 9000 current_ssid->frequency = params.freq; 9001 if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) { 9002 wpa_dbg(wpa_s, MSG_DEBUG, 9003 "P2P CSA: Failed to create new GO config"); 9004 ret = -1; 9005 goto out; 9006 } 9007 9008 if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) { 9009 wpa_dbg(wpa_s, MSG_DEBUG, 9010 "P2P CSA: CSA to a different band is not supported"); 9011 ret = -1; 9012 goto out; 9013 } 9014 9015 os_memset(&csa_settings, 0, sizeof(csa_settings)); 9016 csa_settings.cs_count = P2P_GO_CSA_COUNT; 9017 csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX; 9018 csa_settings.freq_params.freq = params.freq; 9019 csa_settings.freq_params.sec_channel_offset = conf->secondary_channel; 9020 csa_settings.freq_params.ht_enabled = conf->ieee80211n; 9021 csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20; 9022 9023 if (conf->ieee80211ac) { 9024 int freq1 = 0, freq2 = 0; 9025 u8 chan, opclass; 9026 9027 if (ieee80211_freq_to_channel_ext(params.freq, 9028 conf->secondary_channel, 9029 conf->vht_oper_chwidth, 9030 &opclass, &chan) == 9031 NUM_HOSTAPD_MODES) { 9032 wpa_printf(MSG_ERROR, "P2P CSA: Bad freq"); 9033 ret = -1; 9034 goto out; 9035 } 9036 9037 if (conf->vht_oper_centr_freq_seg0_idx) 9038 freq1 = ieee80211_chan_to_freq( 9039 NULL, opclass, 9040 conf->vht_oper_centr_freq_seg0_idx); 9041 9042 if (conf->vht_oper_centr_freq_seg1_idx) 9043 freq2 = ieee80211_chan_to_freq( 9044 NULL, opclass, 9045 conf->vht_oper_centr_freq_seg1_idx); 9046 9047 if (freq1 < 0 || freq2 < 0) { 9048 wpa_dbg(wpa_s, MSG_DEBUG, 9049 "P2P CSA: Selected invalid VHT center freqs"); 9050 ret = -1; 9051 goto out; 9052 } 9053 9054 csa_settings.freq_params.vht_enabled = conf->ieee80211ac; 9055 csa_settings.freq_params.center_freq1 = freq1; 9056 csa_settings.freq_params.center_freq2 = freq2; 9057 9058 switch (conf->vht_oper_chwidth) { 9059 case VHT_CHANWIDTH_80MHZ: 9060 case VHT_CHANWIDTH_80P80MHZ: 9061 csa_settings.freq_params.bandwidth = 80; 9062 break; 9063 case VHT_CHANWIDTH_160MHZ: 9064 csa_settings.freq_params.bandwidth = 160; 9065 break; 9066 } 9067 } 9068 9069 ret = ap_switch_channel(wpa_s, &csa_settings); 9070 out: 9071 current_ssid->frequency = old_freq; 9072 hostapd_config_free(conf); 9073 return ret; 9074 } 9075 9076 9077 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s) 9078 { 9079 struct p2p_go_neg_results params; 9080 struct wpa_ssid *current_ssid = wpa_s->current_ssid; 9081 9082 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP); 9083 9084 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz", 9085 current_ssid->frequency); 9086 9087 /* Stop the AP functionality */ 9088 /* TODO: Should do this in a way that does not indicated to possible 9089 * P2P Clients in the group that the group is terminated. */ 9090 wpa_supplicant_ap_deinit(wpa_s); 9091 9092 /* Reselect the GO frequency */ 9093 if (wpas_p2p_init_go_params(wpa_s, ¶ms, 0, 0, 0, 0, 0, NULL)) { 9094 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq"); 9095 wpas_p2p_group_delete(wpa_s, 9096 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9097 return; 9098 } 9099 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)", 9100 params.freq); 9101 9102 if (params.freq && 9103 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 9104 wpa_printf(MSG_DEBUG, 9105 "P2P: Selected freq (%u MHz) is not valid for P2P", 9106 params.freq); 9107 wpas_p2p_group_delete(wpa_s, 9108 P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL); 9109 return; 9110 } 9111 9112 /* Update the frequency */ 9113 current_ssid->frequency = params.freq; 9114 wpa_s->connect_without_scan = current_ssid; 9115 wpa_s->reassociate = 1; 9116 wpa_s->disconnected = 0; 9117 wpa_supplicant_req_scan(wpa_s, 0, 0); 9118 } 9119 9120 9121 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx) 9122 { 9123 struct wpa_supplicant *wpa_s = eloop_ctx; 9124 9125 if (!wpa_s->ap_iface || !wpa_s->current_ssid) 9126 return; 9127 9128 wpas_p2p_go_update_common_freqs(wpa_s); 9129 9130 /* Do not move GO in the middle of a CSA */ 9131 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9132 wpa_printf(MSG_DEBUG, 9133 "P2P: CSA is in progress - not moving GO"); 9134 return; 9135 } 9136 9137 /* 9138 * First, try a channel switch flow. If it is not supported or fails, 9139 * take down the GO and bring it up again. 9140 */ 9141 if (wpas_p2p_move_go_csa(wpa_s) < 0) 9142 wpas_p2p_move_go_no_csa(wpa_s); 9143 } 9144 9145 9146 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx) 9147 { 9148 struct wpa_supplicant *wpa_s = eloop_ctx; 9149 struct wpa_used_freq_data *freqs = NULL; 9150 unsigned int num = wpa_s->num_multichan_concurrent; 9151 9152 freqs = os_calloc(num, sizeof(struct wpa_used_freq_data)); 9153 if (!freqs) 9154 return; 9155 9156 num = get_shared_radio_freqs_data(wpa_s, freqs, num); 9157 9158 /* Previous attempt to move a GO was not possible -- try again. */ 9159 wpas_p2p_consider_moving_gos(wpa_s, freqs, num, 9160 WPAS_P2P_CHANNEL_UPDATE_ANY); 9161 9162 os_free(freqs); 9163 } 9164 9165 9166 /* 9167 * Consider moving a GO from its currently used frequency: 9168 * 1. It is possible that due to regulatory consideration the frequency 9169 * can no longer be used and there is a need to evacuate the GO. 9170 * 2. It is possible that due to MCC considerations, it would be preferable 9171 * to move the GO to a channel that is currently used by some other 9172 * station interface. 9173 * 9174 * In case a frequency that became invalid is once again valid, cancel a 9175 * previously initiated GO frequency change. 9176 */ 9177 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s, 9178 struct wpa_used_freq_data *freqs, 9179 unsigned int num) 9180 { 9181 unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0; 9182 unsigned int timeout; 9183 int freq; 9184 int dfs_offload; 9185 9186 wpas_p2p_go_update_common_freqs(wpa_s); 9187 9188 freq = wpa_s->current_ssid->frequency; 9189 dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) && 9190 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes); 9191 for (i = 0, invalid_freq = 0; i < num; i++) { 9192 if (freqs[i].freq == freq) { 9193 flags = freqs[i].flags; 9194 9195 /* The channel is invalid, must change it */ 9196 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) && 9197 !dfs_offload) { 9198 wpa_dbg(wpa_s, MSG_DEBUG, 9199 "P2P: Freq=%d MHz no longer valid for GO", 9200 freq); 9201 invalid_freq = 1; 9202 } 9203 } else if (freqs[i].flags == 0) { 9204 /* Freq is not used by any other station interface */ 9205 continue; 9206 } else if (!p2p_supported_freq(wpa_s->global->p2p, 9207 freqs[i].freq) && !dfs_offload) { 9208 /* Freq is not valid for P2P use cases */ 9209 continue; 9210 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9211 P2P_GO_FREQ_MOVE_SCM) { 9212 policy_move = 1; 9213 } else if (wpa_s->conf->p2p_go_freq_change_policy == 9214 P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS && 9215 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9216 policy_move = 1; 9217 } else if ((wpa_s->conf->p2p_go_freq_change_policy == 9218 P2P_GO_FREQ_MOVE_SCM_ECSA) && 9219 wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) { 9220 if (!p2p_get_group_num_members(wpa_s->p2p_group)) { 9221 policy_move = 1; 9222 } else if ((wpa_s->drv_flags & 9223 WPA_DRIVER_FLAGS_AP_CSA) && 9224 wpas_p2p_go_clients_support_ecsa(wpa_s)) { 9225 u8 chan; 9226 9227 /* 9228 * We do not support CSA between bands, so move 9229 * GO only within the same band. 9230 */ 9231 if (wpa_s->ap_iface->current_mode->mode == 9232 ieee80211_freq_to_chan(freqs[i].freq, 9233 &chan)) 9234 policy_move = 1; 9235 } 9236 } 9237 } 9238 9239 wpa_dbg(wpa_s, MSG_DEBUG, 9240 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X", 9241 invalid_freq, policy_move, flags); 9242 9243 /* 9244 * The channel is valid, or we are going to have a policy move, so 9245 * cancel timeout. 9246 */ 9247 if (!invalid_freq || policy_move) { 9248 wpa_dbg(wpa_s, MSG_DEBUG, 9249 "P2P: Cancel a GO move from freq=%d MHz", freq); 9250 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9251 9252 if (wpas_p2p_in_progress(wpa_s)) { 9253 wpa_dbg(wpa_s, MSG_DEBUG, 9254 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move"); 9255 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, 9256 wpa_s, NULL); 9257 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9258 wpas_p2p_reconsider_moving_go, 9259 wpa_s, NULL); 9260 return; 9261 } 9262 } 9263 9264 if (!invalid_freq && (!policy_move || flags != 0)) { 9265 wpa_dbg(wpa_s, MSG_DEBUG, 9266 "P2P: Not initiating a GO frequency change"); 9267 return; 9268 } 9269 9270 /* 9271 * Do not consider moving GO if it is in the middle of a CSA. When the 9272 * CSA is finished this flow should be retriggered. 9273 */ 9274 if (hostapd_csa_in_progress(wpa_s->ap_iface)) { 9275 wpa_dbg(wpa_s, MSG_DEBUG, 9276 "P2P: Not initiating a GO frequency change - CSA is in progress"); 9277 return; 9278 } 9279 9280 if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq)) 9281 timeout = P2P_GO_FREQ_CHANGE_TIME; 9282 else 9283 timeout = 0; 9284 9285 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs", 9286 freq, timeout); 9287 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL); 9288 eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL); 9289 } 9290 9291 9292 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s, 9293 struct wpa_used_freq_data *freqs, 9294 unsigned int num, 9295 enum wpas_p2p_channel_update_trig trig) 9296 { 9297 struct wpa_supplicant *ifs; 9298 9299 eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX, 9300 NULL); 9301 9302 /* 9303 * Travers all the radio interfaces, and for each GO interface, check 9304 * if there is a need to move the GO from the frequency it is using, 9305 * or in case the frequency is valid again, cancel the evacuation flow. 9306 */ 9307 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 9308 radio_list) { 9309 if (ifs->current_ssid == NULL || 9310 ifs->current_ssid->mode != WPAS_MODE_P2P_GO) 9311 continue; 9312 9313 /* 9314 * The GO was just started or completed channel switch, no need 9315 * to move it. 9316 */ 9317 if (wpa_s == ifs && 9318 (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE || 9319 trig == WPAS_P2P_CHANNEL_UPDATE_CS)) { 9320 wpa_dbg(wpa_s, MSG_DEBUG, 9321 "P2P: GO move - schedule re-consideration"); 9322 eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0, 9323 wpas_p2p_reconsider_moving_go, 9324 wpa_s, NULL); 9325 continue; 9326 } 9327 9328 wpas_p2p_consider_moving_one_go(ifs, freqs, num); 9329 } 9330 } 9331 9332 9333 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s) 9334 { 9335 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 9336 return; 9337 9338 wpas_p2p_update_channel_list(wpa_s, 9339 WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE); 9340 } 9341 9342 9343 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s) 9344 { 9345 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 9346 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 9347 "the management interface is being removed"); 9348 wpas_p2p_deinit_global(wpa_s->global); 9349 } 9350 } 9351 9352 9353 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s) 9354 { 9355 if (wpa_s->ap_iface->bss) 9356 wpa_s->ap_iface->bss[0]->p2p_group = NULL; 9357 wpas_p2p_group_deinit(wpa_s); 9358 } 9359 9360 9361 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq, 9362 unsigned int period, unsigned int interval, 9363 unsigned int count) 9364 { 9365 struct p2p_data *p2p = wpa_s->global->p2p; 9366 u8 *device_types; 9367 size_t dev_types_len; 9368 struct wpabuf *buf; 9369 int ret; 9370 9371 if (wpa_s->p2p_lo_started) { 9372 wpa_dbg(wpa_s, MSG_DEBUG, 9373 "P2P Listen offload is already started"); 9374 return 0; 9375 } 9376 9377 if (wpa_s->global->p2p == NULL || 9378 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) { 9379 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported"); 9380 return -1; 9381 } 9382 9383 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 9384 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u", 9385 freq); 9386 return -1; 9387 } 9388 9389 /* Get device type */ 9390 dev_types_len = (wpa_s->conf->num_sec_device_types + 1) * 9391 WPS_DEV_TYPE_LEN; 9392 device_types = os_malloc(dev_types_len); 9393 if (!device_types) 9394 return -1; 9395 os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN); 9396 os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type, 9397 wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN); 9398 9399 /* Get Probe Response IE(s) */ 9400 buf = p2p_build_probe_resp_template(p2p, freq); 9401 if (!buf) { 9402 os_free(device_types); 9403 return -1; 9404 } 9405 9406 ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count, 9407 device_types, dev_types_len, 9408 wpabuf_mhead_u8(buf), wpabuf_len(buf)); 9409 if (ret < 0) 9410 wpa_dbg(wpa_s, MSG_DEBUG, 9411 "P2P: Failed to start P2P listen offload"); 9412 9413 os_free(device_types); 9414 wpabuf_free(buf); 9415 9416 if (ret == 0) { 9417 wpa_s->p2p_lo_started = 1; 9418 9419 /* Stop current P2P listen if any */ 9420 wpas_stop_listen(wpa_s); 9421 } 9422 9423 return ret; 9424 } 9425 9426 9427 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s) 9428 { 9429 int ret; 9430 9431 if (!wpa_s->p2p_lo_started) 9432 return 0; 9433 9434 ret = wpa_drv_p2p_lo_stop(wpa_s); 9435 if (ret < 0) 9436 wpa_dbg(wpa_s, MSG_DEBUG, 9437 "P2P: Failed to stop P2P listen offload"); 9438 9439 wpa_s->p2p_lo_started = 0; 9440 return ret; 9441 } 9442